WT5058
8-bit
C with 8KB ROM, an 8-CH
12-bit A/D Converter and 16x4 LCD Driver
Weltrend Semiconductor Inc.
24 2 2F, No. 24, Industry East 9
th
Road,
Science-Based Industrial Park,
Hsin-chu, TAIWAN
1 Rev.1.00
eltrend
DESCRIPTION
The WT5058 is a high-performance, low-cost, CMOS 8-bit single-chip microcontroller with
8Kbytes on-chip ROM, an 8-channel 12-bit analog to digital converter and 16x4 LCD driver. This
chip is suitable for variable applications, especially where analog signal (sensor output) to digital
signal conversion and LCD display are required, including industrial control, consumer,
communications, and security products.
This chip has 8-bit CPU, RAM, ROM, I/Os, dual 16-bit timer/counters, interrupt controller, 16x4
LCD driver and an 8-channel 12-bit A/D converter. To be suitable for portable battery-powered
applications, a power saving function is included.
FEATURES
u
8-bit single chip microcontroller with 8K bytes ROM and 384bytes SRAM
u
Wide voltage operating range from 2.4 V to 5.5 V
u
On-chip RC oscillator runs at 2MHz and crystal oscillator can run up to 6.0 MHz
u
6 interrupt sources (external:1; internal:5) ; all sources have independent latches each and
multiple interrupt control is available
u
I/O port (32 pins)
u
Port P0 8 pins (shared with analog inputs; 4 pins with 20 mA sink current)
u
Port P1 8 pins (20 mA sink current)
u
Port P2 8 pins (shared with SEG9~SEG16)
u
Port P3 8 pins (shared with SEG1~SEG8)
u
Interval Timer (Internal time base generator)
u
Operating current 2mA/4MHz@5V; providing standby mode (OSC is
stopped and current consumption < 1 uA@5V) and key wake-up mode
u
Watchdog timer
u
Dual PWM
u
Dual 16-bit timer/counters
u
A/D converter module
u
8 analog inputs multiplexed into one A/D converter
u
Sample and hold
u
20
S conversion time/per channel
WT5058
8-bit
C with 8KB ROM, an 8-CH
12-bit A/D Converter and 16x4 LCD Driver
Weltrend Semiconductor Inc.
24 2 2F, No. 24, Industry East 9
th
Road,
Science-Based Industrial Park,
Hsin-chu, TAIWAN
2 Rev.1.00
eltrend
u
12-bit resolution with
2 LSB accuracy
u
External reference input, AD
VRF
u
LCD driver (automatically display)
u
LCD direct drive (max. 8-digit display at 1/4 duty)
u
1/4, 1/3, 1/2 duties and 1/2, 1/3 biases can be selected by programming
u
Package: Chip form, 28/40-pin PDIP or 28-pin Skinny
WT5058
8-bit
C with 8KB ROM, an 8-CH
12-bit A/D Converter and 16x4 LCD Driver
Weltrend Semiconductor Inc.
24 2 2F, No. 24, Industry East 9
th
Road,
Science-Based Industrial Park,
Hsin-chu, TAIWAN
3 Rev.1.00
eltrend
PACKAGE PIN ASSIGNMENT (40-PIN DIP)
1
40
2
39
3 38
5 36
6 35
7 34
9 32
10 31
WT5058
11 30
13 28
15 26
16 25
17 24
19 22
20 21
P04/AIN4
P05/AIN5
P06/AIN6
P07/AIN7
ADVRF
P20/SEG9
P21/SEG1
P22/SEG1
P23/SEG1
P24/SEG1
P25/SEG14/VCAP1
P26/SEG15/VCAP2
P27/SEG16/VCAP3
P36/SEG7
P37/SEG8
P10/PWM
P11/PWM
P12/ECT0
P13/VLCD
GND
18
14
12
4
8
23
27
29
33
37
P14/COM1
P15/COM
P16/COM
P17/COM
CLKSEL/TEST
XIN/ROSC
XOUT
EXTINT
RESET
P30/SEG1
P31/SEG2
P32/SEG3
P33/SEG4
P34/SEG5
P35/SEG6
P00/AIN0
P01/AIN1
P02/AIN2
P03/AIN3
VDD
WT5058
8-bit
C with 8KB ROM, an 8-CH
12-bit A/D Converter and 16x4 LCD Driver
Weltrend Semiconductor Inc.
24 2 2F, No. 24, Industry East 9
th
Road,
Science-Based Industrial Park,
Hsin-chu, TAIWAN
4 Rev.1.00
eltrend
PACKAGE PIN ASSIGNMENT (28-PIN DIP or 28-PIN SKINNY; Option #1)
1
28
2
27
3 26
5 24
6 23
7 22
9 20
10 19
WT5058
11 18
13 16
P04/AIN4
P05/AIN5
P06/AIN6
P07/AIN7
ADVRF
P20/SEG9
P21/SEG1
P22/SEG1
P23/SEG1
P24/SEG1
P10/PWM
P11/PWM
P12/ECT0
P13/VLCD
14
12
4
8
15
17
21
25
GND
P14/COM1
P15/COM
P16/COM
CLKSEL/TEST
XIN/ROSC
XOUT
EXTINT
RESET
P00/AIN0
P01/AIN1
P02/AIN2
P03/AIN3
VDD
WT5058
8-bit
C with 8KB ROM, an 8-CH
12-bit A/D Converter and 16x4 LCD Driver
Weltrend Semiconductor Inc.
24 2 2F, No. 24, Industry East 9
th
Road,
Science-Based Industrial Park,
Hsin-chu, TAIWAN
5 Rev.1.00
eltrend
PACKAGE PIN ASSIGNMENT (28-PIN DIP or 28-PIN SKINNY; Option #2)
3
28
4
27
3 26
5 24
6 23
7 22
9 20
10 19
WT5058
11 18
13 16
P04/AIN4
P05/AIN5
P06/AIN6
P07/AIN7
ADVRF
P20/SEG9
P21/SEG1
P22/SEG1
P23/SEG1
P10/PWM
P11/PWM
P12/ECT0
P13/VLCD
GND
14
12
4
8
15
17
21
25
P14/COM
P15/COM2
P16/COM
P17/COM
CLKSEL/TEST
XIN/ROSC
XOUT
EXTINT
RESET
P00/AIN0
P01/AIN1
P02/AIN2
P03/AIN3
VDD
WT5058
8-bit
C with 8KB ROM, an 8-CH
12-bit A/D Converter and 16x4 LCD Driver
Preliminary
Weltrend Semiconductor Inc.
24 2 2F, No. 24, Industry East 9
th
Road,
Science-Based Industrial Park,
Hsin-chu, TAIWAN
8 Rev.1.00
eltrend
PIN FUNCTION
PIN NAME
40-pin
In/Out
FUNCTIONS
P00/AIN0~ P03/AIN3
P04/AIN4~P07/AIN7
36 ~ 39
1~4
I/O
8-bit I/O port; internal pull-up;
o/p: sink 20mA(P04~P07); i/p: external pull-low
(shared with analog inputs)
P10/PWM0
P11/PWM1
P12/ECT0
P13/V
LCD
P14/COM1
P15/COM2
P16/COM3
P17/COM4
16
17
18
19
21
22
23
24
I/O
(shared with PWM output); 8-bit I/O port; internal pull-
up; o/p: sink 20mA; i/p: external pull-low
(External counter)
(Bias voltage to LCD)
(LCD common output)
(LCD common output)
(LCD common output)
(LCD common output)
P20/SEG9
P21/SEG10
P22/SEG11
P23/SEG12
P24/SEG13
P25/SEG14/VCAP1
P26/SEG15/VCAP2
P27/SEG16/VCAP3
6
7
8
9
10
11
12
13
I/O
8-bit I/O port; internal pull-up;
i/p: external pull-low
(shared with LCD segment output)
P20~P23 support key wake-up
P30/SEG1
P31/SEG2
P32/SEG3
P33/SEG4
P34/SEG5
P35/SEG6
P36/SEG7
P37/SEG8
30
31
32
33
34
35
14
15
I/O
8-bit I/O port; internal pull-up;
i/p: external pull-low
(shared with LCD segment output)
XIN/ROSC
26
Input
Crystal input/ROSC input
XOUT
27
Output
Crystal output
RESET
29
Input
System reset signal input; low active
VDD
40
Input
Power source
GND
20
Input
Ground
AD
VRF
5
Input
Reference voltage input to A/D
EXTINT
28
Input
External interrupt input
CLKSEL/TEST
25
Input
Clock sources select, connected to VDD for ROSC or to
GND for Crystal (Test Pin)
WT5058
8-bit
C with 8KB ROM, an 8-CH
12-bit A/D Converter and 16x4 LCD Driver
Preliminary
Weltrend Semiconductor Inc.
24 2 2F, No. 24, Industry East 9
th
Road,
Science-Based Industrial Park,
Hsin-chu, TAIWAN
10 Rev.1.00
eltrend
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