Suites 2202-7, Tower 6, The Gateway,
9 Canton Road, Tsimshatsui,
Kowloon, Hong Kong
Tel: (852) 2123 3289 Fax: (852) 2123 3393
E-mail: sales@jesstech.com
Home Page: www.jesstech.com

HE84760

HE80000 SERIES

3 Aug 2001

1 of 14

Preliminary V 1.6

A.HE84760 Introduction

Preliminary V1.6

HE84760 is a member of Jess Tech HE80000 series 8-bit CMOS micro-controller. This IC as
32COM[3072-dot of LCD driver + 16 Bit I/O Port] ...[2304-dot of LCD driver + 40 Bit I/O port]
LCD driver or 48COM[3840-dot of LCD driver + 16 Bit I/O Port] ...[2688-dot of LCD driver +
40 Bit I/O Port] or 64 COM[4096-dot of LCD driver + 16 Bit I/O Ports]...[2560-dot of LCD
driver + 40 bit I/O Port]. It has built in voltage regulator which makes the LCD maintain a stable
display. It built-in one internal Op-Amp, allow it to used in different sensors like light, speech,
temperature, and humidity sensor. It has one 7-bit D/A converter and PWM output to provide a
complete speech output interface. Using the built-in 512K ROM and 4KB RAM allow massive
storage of program library, speech, graphic and data.
The HE84760 provides a very simple and effective instruction set, each instruction byte occupies
only 1.5 clocks cycle time, therefore, and it is suitable to apply in the high performance systems.

B.HE84760 Features

Operating Voltage:

2.4V � 3.6V

Operation frequency Range: DC ~ 8MHz @ 3.6V

DC ~ 4MHz @ 2.4V

ROM size:

512K Bytes (256K Program ROM + 256K data ROM)

RAM size:

4K Bytes; Dedicated RAM VDD

Dual Clock:

Normal(Fast) clock:

32.768K ~ 8MHz (No Internal Clock)

Slow

clock:

32.768KHz

Operating Mode:

DUAL FASTSLOWIDLESLEEP

Internal Power on Reset circuit

Built-in WATCH DOG TIMER

16 - 40 bi-directional I/O pins, PUSH-PULL or OPEN DRAIN output selected by mask option

Special designed hardware auto scanning keyboard (4*20), it can both lower the cost of
hardware (share with LCD SEG PIN)and lower the burden of software.

Built-in an internal Op-Amp

Either of the following combination can be selected: 32COM*96SEG LCD DRIVER or
48COM*80SEG LCD DRIVER or 64COM*64SEG LCD DRIVER. All of these are selected B
type. Built-in regulator, please refer to Application Circuit. The maximum voltage LVP of
LCD must less than 8.5 Volt.

Built-in one 7-bit D/A Converter

Built-in one PWM output ( No Rate Selection, connect with VDD & PWMP). Have dedicated
GND pin for PWM clock

Provides three internal and two external interrupt

Provides two 16-bit timer, one time-base timer.

Instruction Set: 32 Instructions, 4 types of Addressing Mode, 2 individual Pointer for ROM
(19-bit) and RAM (12-bit) table access.

Suites 2202-7, Tower 6, The Gateway,
9 Canton Road, Tsimshatsui,
Kowloon, Hong Kong
Tel: (852) 2123 3289 Fax: (852) 2123 3393
E-mail: sales@jesstech.com
Home Page: www.jesstech.com

HE84760

HE80000 SERIES

3 Aug 2001

2 of 14

Preliminary V 1.6

C. HE84760 Application

Item

I.F.C

E.S.C

I.P.R

PROM DROM

TP+1

RAM

I/O

DTMF

WDT

Timer

HE84760

256KB 256KB 19-bit

4KB

4-bit 8-bit

16-40

T1, T2, TB

Item

DAO

PWM

LCD

COM*SEG

Bias

Rgr

ChrgPmp

LV2

LVG REC

S.R.

HE84760

3072-4096 32*96,48*80,

64*64

1/7, 1/8,

1/9

3,4,5

D. Pin Assignment

Pin

Pin Name

Function

Description

78
77

FXI,
FXO

B,
O

External Fast Clock pin. To
connect the Crystal or R,C
oscillation to generate
32.768KHz ~ 8MHz
system clock.

81
80

SXI,
SXO

I,
O

External Slow Clock pin .
To connect the 32.768KHz
oscillator to generate the
stable frequency for Slow
Mode, provide LCD for
HE84760 and Timer 1
clock source.

Mask Option settings :
MO_FCK/SCKN=00Slow Clock only

01Illegal
10Dual Clock
11Fast Clock only

MO_FOSCE=0Internal fast oscillation

1External fast oscillation

MO_FXTAL=0R,C oscillation for Fast Clock

1Crystal oscillation for Fast Clock

MO_SXTAL=0R,C oscillation for 32.768K Clock

1X'tal oscillation for 32.768K Clock

Program the value of OP1and OP2 to change the
operating modes (Normal, Slow, Idle and Sleep).
In Dual Clock modethe system runs in Fast Clock,
only LCD & Timer 1 use the 32.768K clock source.

RSTP_N

System reset signal

Pull this pin to low level to reset the system. Besides,
Select the Mask Option (MO_PORE=1) to enable the
HE84760 internal Power-on Reset function.
In addition, the MO_WDTE is used for Watch Dog
Timer setting
MO_WDTE =0Disable Watch Dog Timer

=1Enable Watch Dog Timer

TSTP_P

Test Pin.
Pull the pin to high level to
enter into testing mode.

Connect TSTP_P TO to a TEST POINT, and to make
it floating. It can let KB to test on PCB

97..
100

PRTC[7:4]/
SCNI [3:0]

B Port C bi-directional I/O

pin (4 pins) or key scan
input pin. Key and I/O
cannot exist at the same
time. When Key Scan turn-
on, SCNO[19:0] will also
in active.

Mask Option MO_CPP[7:0] to preset the output type:

MO_CPP=1 : Push-pull output

= 0 : Open-drain output.

When assigned the port to input pin, first set output be
`1' and read the result to get the input value.
Use Mask Option MO_LCDKEY:
MO_LCDKEY at "1", for I/O
At "0", for key scan

87..9
4

PRTD[7:0]

Port D bi-directional I/O
pin, (8 pins). PRTD[7:2] is
also a Wake-up pin and
PRTD[7:6] is used for
interrupt input pin.

Mask Option MO_DPP[7:0] to preset the output type:

MO_DPP=1 : Push-pull output

0 : Open-drain output.

When assigned the port to input pin, send a `1' and
read the result to get the input value.

Suites 2202-7, Tower 6, The Gateway,
9 Canton Road, Tsimshatsui,
Kowloon, Hong Kong
Tel: (852) 2123 3289 Fax: (852) 2123 3393
E-mail: sales@jesstech.com
Home Page: www.jesstech.com

HE84760

HE80000 SERIES

3 Aug 2001

3 of 14

Preliminary V 1.6

83..8
6

PRT10[3:0]

B Port D both I/O pin, total 4

pins

Use Mask Option MO_10PP[3:0] design its output
status:
MO_10PP at"1", for Push �pull output;
At"0" for Open-drain output.
When select input pin, it is necessary to make output
at"1", then correct input value can be read.

174..
175
1..6

PRT14[7:0]/
SEG [23:16]

B/
0

Port 14 bi-directional I/O
pin, (8 pin) or LCD
Segment [23:16]

Mask Option MO LIO14 [7:0] set these 8 pins to be
I/O or LCD Segment

MO_LIO14[7:0] =0; I/O Pin=1, LCD Pin

When pin assigned to be I/O pin, use Mask Option
MO_14PP[7:0] to preset the output
MO_14PP[7:0]=1 : Push-pull output

0 : Open-drain output.

7..14 PRT15[7:0]/

SEG [15:8]

B/
0

Port 15 bi-directional I/O
pin, (8 pin) or LCD
Segment [15:8]

Mask Option MO LIO15 [7:0] set these 8 pins to be
I/O or LCD Segment

MO_LIO15[7:0] =0; I/O Pin=1, LCD Pin

When pin assigned to be I/O pin, use Mask Option
MO_15PP[7:0] to preset the output
MO_15PP[7:0]=1 : Push-pull output

0 : Open-drain output.

15..
22

PRT17[7:0]/
SEG [7:0]

B/
0

Port 17 bi-directional I/O
pin, (8 pin) or LCD
Segment [7:0]

Mask Option MO LIO17 [7:0] set these 8 pins to be
I/O or LCD Segment

MO_LIO17[7:0] =0; I/O Pin=1, LCD Pin

When pin assigned to be I/O pin, use Mask Option
MO_17PP[7:0] to preset the output
MO_17PP[7:0]=1 : Push-pull output

0 : Open-drain output.

154..
173

SGKY[43:24]
/SCNO [19:0]

O LCD Segments / key scan

out; exist simultaneously

MO_LCDKEY
=0: LCD SGKY[43:24] as SEG/KEY SCAN
=1: LCD SGKY[43:24] as SEG pin only

23..
54

COM[31:0]

O LCD COMmon Output

133..
102

CMSG[63:32] O COM[63:32]/ SEG[64:95]

134..
153

SEG[63:44]

O LCD SEGment Output

Refer LCD and RAM map.

L VL1

P LCD Bias Voltage 1

L VL2

P LCD Bias Voltage 2

L VL3

P LCD Bias Voltage 3

L VL4

P LCD Bias Voltage 4

L VL5

P LCD Bias Voltage 5

LVP>LV5>LV4>LV3>LV2>LV1.

LVP-0.5>LV5 (be sure to keep 0.5 volt between LVP
and LV5 at lease.)

Adjust Resistor (R2) between LGS2 and LV5 to set
LV5 FOR LCD glass. The formula is LV5 =
(1+R2/80K)*0.9V

LGS1

Regulator Voltage Setting

Could adjust LVREG voltage

LGS2

LCD Drive Voltage Setting For LV5 voltage setting

LVP

P Charge

Pump

Output

LVP=(3,4,5)*LVREG which setting by external
Capacitor set
LVP must smaller than 8.5 Volt

LCAP4A

O Charge Pump Capacitor Pin

LCAP2B

O Charge Pump Capacitor Pin

Different Capacitor Configuration make
LVP=(3,4,5)* LVREG

The LCD driving circuit here makes regulation first,
then charge pump to LVP. It generates bias voltage
based on LVP.

Suites 2202-7, Tower 6, The Gateway,
9 Canton Road, Tsimshatsui,
Kowloon, Hong Kong
Tel: (852) 2123 3289 Fax: (852) 2123 3393
E-mail: sales@jesstech.com
Home Page: www.jesstech.com

HE84760

HE80000 SERIES

3 Aug 2001

4 of 14

Preliminary V 1.6

LCAP2A

O Charge Pump Capacitor Pin

LCAP1A

O Charge Pump Capacitor Pin

LCAP1B

O Charge Pump Capacitor Pin

LCAP3A

O Charge Pump Capacitor Pin

L VREG

O Voltage Regulator Output

(To Charge Pump Input)

Adjust to about 2.0 Volt by Resistor between LGS1
and LVREG

L VAG

O Reference Voltage Output Fixed 0.9 Volt DC

PWM

PWM O/P pin, can directly
drive Speaker or Buzzer for
voice output.

Preset the Bit2 of VOC register: PWM =1turn on
PWM.

O D/A voice output

Preset the Bit-1 of VOC register: DA=1turn on VO.

OPIN

OPAMP Inverting I/P pin

OPIP

OPAMP Non-inverting I/P
pin.

OPO

O OPAMP O/P pin

Preset the Bit-0 of VOC register: OP=1turn on OP.

Individual built-in OP-Amp

VDD

Positive Power Input

GND

Power Ground Input

101

VDD_RAM

Dedicated Power for RAM

GND_PWM

Dedicated GND for PWM

2 Pair of Power Pin: This two set power pin is separated
inside. Adding two 0.1

�

F capacitor as by-pass capacitor

on each set is necessary

E. LCD RAM Details

There are three types of LCD Driver: 32COM, 48COM

and 64COM details of the RAM MAP are listed below:

32COM:

Page

7, 6

SEG

[7:0]

SEG

[15:8]

SEG

[23:16]

SEG

[31:24]

SEG

[39:32]

SEG

[47:40]

SEG

[55:48]

SEG

[63:56]

SEG

[71:64]

SEG

[79:72]

SEG

[87:80]

SEG

[95:88]

COM0

7E0H

7C0H

7A0H

780H

760H

740H

720H

700H

6E0H

6C0H

6A0H

680H

COM1

7E1H

7C1H

7A1H

781H

761H

741H

721H

701H

6E1H

6C1H

6A1H

681H

COM15

7EFH

7CFH 7AFH

78FH

76FH

74FH

72FH

70FH

6EFH

6CFH 6AFH

68FH

COM16

7F0H

7D0H

7B0H

790H

770H

750H

730H

710H

6F0H

6D0H

6B0H

690H

COM30

7FEH 7DEH 7BEH

79EH

77EH

75EH

73EH

71EH

6FEH 6DEH 6BEH

69EH

COM31

7FFH

7DFH 7BFH

79FH

77FH

75FH

73FH

71FH

6FFH

6DFH 6BFH

69FH

Suites 2202-7, Tower 6, The Gateway,
9 Canton Road, Tsimshatsui,
Kowloon, Hong Kong
Tel: (852) 2123 3289 Fax: (852) 2123 3393
E-mail: sales@jesstech.com
Home Page: www.jesstech.com

HE84760

HE80000 SERIES

3 Aug 2001

5 of 14

Preliminary V 1.6

48COM:

Page

7, 6

SEG

[7:0]

SEG

[15:8]

SEG

[23:16]

SEG

[31:24]

SEG

[39:32]

SEG

[47:40]

SEG

[55:48]

SEG

[63:56]

SEG

[71:64]

SEG

[79:72]

COM0

7C0H

780H

740H

700H

6C0H

680H

640H

600H

5C0H

580H

COM1

7C1H

781H

741H

701H

6C1H

681H

641H

601H

5C1H

581H

COM15

7CFH

78FH

74FH

70FH

6CFH

68FH

64FH

60FH

5CFH

58FH

COM16

7D0H

790H

750H

710H

6D0H

690H

650H

610H

5D0H

590H

COM31

7DFH

79FH

75FH

71FH

6DFH

69FH

65FH

61FH

5DFH

59FH

COM32

7E0H

7A0H

760H

720H

6E0H

6A0H

660H

620H

5E0H

5A0H

COM46

7EEH

7AEH

76EH

72EH

6EEH

6AEH

66EH

62EH

5EEH

5AEH

COM47

7EFH

7AFH

76FH

72FH

6EFH

6AFH

66FH

62FH

5EFH

5AFH

64 COM:

Электронный компонент: HE84760