Weltrend Semiconductor, Inc.
WT6148/WT6160
Digital Monitor Controller
(ROM Type)
Preliminary Data Sheet
REV. 1.02
Sep. 4, 02
The information in this document is subject to change without notice.
Weltrend Semiconductor, Inc. All Rights Reserved.
WT6148/WT6160
v1.02
Digital Monitor Controller
Weltrend Semiconductor, Inc.
Page 2
GENERAL DESCRIPTION
The WT6148/ WT6160 is a microcontroller for digital controlled monitor. It contains an 8-bit CPU, 48K
/60K bytes ROM, 1056 bytes RAM, 14 PWMs, parallel I/Os, SYNC signal processor, timer, DDC1/2B
interface, master/slave I
2
C interface, 6-bit A/D converter and watch-dog timer.
FEATURES
8-bit 6502 compatible CPU with 6MHz operating frequency
WT6148 : 48K bytes ROM,
WT6160 : 60K bytes ROM,
,1024 bytes SRAM+32 bytes bit addressable SRAM
12MHz crystal oscillator
14 channels 8-bit PWM outputs
Sync signal processor with H+V separation, H/V frequency counter, H/V polarity detection/control
and clamp pulse output
Six free-running sync signal outputs (Horizontal frequency up to 106KHz 85Hz@1600x1200)
Self-test pattern
DDC1/2B module for EDID1.3, EDID2.0 and Enhance EDID
Fast mode master/slave I
2
C interface (up to 400KHz)
Watch-dog timer
Maximum 28 programmable I/O pins
One 8-bit programmable timer
6-bit A/D converter with 4 selectable inputs
One external interrupt request input
Low V
DD
reset
ORDERING INFORMATION
Package Type
Part Number
42-pin PDIP
WT6148/ WT6160-N42
42-pin Shrink PDIP
WT6148/ WT6160-K42
40-pin PDIP
WT6148/ WT6160-N40
44-pin SOP
WT6148/ WT6160-S44
44-pin PLCC
WT6148/ WT6160-L44
WT6148/WT6160
v1.02
Digital Monitor Controller
Weltrend Semiconductor, Inc.
Page 3
PIN ASSIGNMENT AND PACKAGE TYPE
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
1
6
5
4
3
2
44
43
42
41
40
7
17
16
15
14
13
12
11
10
9
8
GND
HIN
IRQ
OSCI
OSCO
PA0/SDA1
PA1/SCL1
PA2/PWM8
PA3/PWM9
PA4/PWM10
PA5/PWM11
PA6/PWM12
PA7/PWM13/CLAMP
PB0/HFO
PB1/HFI
PB2
PB3/PAT
PB4/SCL2
PB5/SDA2
PC0/AD0
PC1/AD1
PC2/AD2
PC3/AD3
PC4
PC5
PC6
PC7/SOGIN
PD0/VOUT
PD1/HOUT
PD2/PWM7
PD3/PWM6
PD4/PWM5
PD5/PWM4
PWM0
PWM1
PWM2
PWM3
RESET/3V3
VDD
VIN
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
1
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
GND
HIN
IRQ
OSCI
OSCO
PA0/SDA1
PA1/SCL1
PA2/PWM8
PA3/PWM9
PA4/PWM10
PA5/PWM11
PA6/PWM12
PA7/PWM13/CLAMP
PB0/HFO
PB1/HFI
PB2
PB3/PAT
PB4/SCL2
PB5/SDA2
PC0/AD0
PC1/AD1
PC2/AD2
PC3/AD3
PC4
PC5
PC6
PC7/SOGIN
PD0/VOUT
PD1/HOUT
PD2/PWM7
PD3/PWM6
PD4/PWM5
PD5/PWM4
PWM0
PWM1
PWM2
PWM3
RESET/3V3
VDD
VIN
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
1
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
GND
HIN
IRQ
OSCI
OSCO
PA0/SDA1
PA1/SCL1
PA2/PWM8
PA3/PWM9
PA4/PWM10
PA5/PWM11
PA6/PWM12
PA7/PWM13/CLAMP
PB0/HFO
PB1/HFI
PB2
PB3/PAT
PB4/SCL2
PB5/SDA2
PC0/AD0
PC1/AD1
PC2/AD2
PC3/AD3
PC4
PC5
PC6
PC7/SOGIN
PD0/VOUT
PD1/HOUT
PD2/PWM7
PD3/PWM6
PD4/PWM5
PD5/PWM4
PWM0
PWM1
PWM2
PWM3
RESET/3V3
VDD
VIN
21
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
1
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
GND
HIN
IRQ
OSCI
OSCO
PA0/SDA1
PA1/SCL1
PA2/PWM8
PA3/PWM9
PA4/PWM10
PA5/PWM11
PA6/PWM12
PA7/PWM13/CLAMP
PB0/HFO
PB1/HFI
PB2
PB3/PAT
PB4/SCL2
PB5/SDA2
PC0/AD0
PC1/AD1
PC2/AD2
PC3/AD3
PC4
PC5
PC6
PC7/SOGIN
PD0/VOUT
PD1/HOUT
PD2/PWM7
PD3/PWM6
PD4/PWM5
PD5/PWM4
PWM0
PWM1
PWM2
PWM3
RESET/3V3
VDD
VIN
WT6160-N40
WT6160-K42
WT6160-S44
WT6160-L44
WT6148-L44
WT6148-S44
WT6148-N40
WT6148-K42
44-pin PLCC
44-pin SOP
40-pin PDIP
42-pin SPDIP
WT6148/WT6160
v1.02
Digital Monitor Controller
Weltrend Semiconductor, Inc.
Page 4
PIN DESCRIPTION
Pin No.
Pin Name I/O
Description
L44 S44 42 40
1
1
1
- NC
No Connection.
2
2
2
1 PWM2
O PWM2 output (10V open-drain).
3
3
3
2 PWM1
O PWM1 output (5V open-drain).
4
4
4
3 PWM0
O PWM0 output (5V open-drain).
5
5
5
4 /RESET
I Reset input
6
-
-
- NC
No Connection.
7
6
6
5 VDD
+5V power supply.
-
7
-
- NC
No Connection.
8
8
7
6 GND
Ground.
9
9
8
7 OSCO
I/O 12MHz oscillator output.
10
10
9
8 OSCI
I 12MHz oscillator input.
11
11 10
9 PB5/ SDA2
I/O Port B5 or I
2
C interface data line.
12
12 11
10 PB4/ SCL2
I/O Port B4 or I
2
C interface clock line.
13
13 12
11 PB3/PAT
I/O Port B3 or test pattern output
14
14 13
12 PB2
I/O Port B2.
15
15 14
13 PB1/HFI
I/O Port B1 or half frequency divider input.
16
16 15
14 PB0/HFO
I/O Port B0 or half frequency divider output.
17
17 16
15 /IRQ
I Interrupt request input. A low level on this can generate
interrupt.
18
18 17
6 PC7/SOGIN I/O Port C7 or Sync on Green input.
19
19 18
17 PC6
I/O Port C6.
20
20 19
18 PC5
I/O Port C5.
21
21 20
19 PC4
I/O Port C4.
22
22 21
20 PC3/AD3
I/O Port C3 or ADC input 3.
23
23 22
21 PC2/AD2
I/O Port C2 or ADC input 2.
24
24 23
22 PC1/AD1
I/O Port C1 or ADC input 1.
25
25 24
23 PC0/AD0
I/O Port C0 or ADC input 0.
26
26 25
24 PA0/SDA1
I/O Port A0 or DDC interface SDA pin.
27
27 26
25 PA1/SCL1
I/O Port A1 or DDC interface SCL pin.
28
28 27
26 PA2/PWM8
I/O Port A2 or PWM8 output.
29
29 28
27 PA3/PWM9
I/O Port A3 or PWM9 output.
30
30 29
28 PA4/PWM10 I/O Port A4 or PWM10 output.
31
31 30
29 PA5/PWM11 I/O Port A5 or PWM11 output.
32
32 31
30 PA6/PWM12 I/O Port A6 or PWM12 output.
33
33 32
31 PA7/PWM13/
CLAMP
I/O Port A7 or PWM13 output or clamp pulse output.
34
34 33
32 PD0/VOUT
I/O Port D0 or Vsync output.
35
35 34
33 PD1/HOUT
I/O Port D1 or Hsync output.
36
36 35
34 PD2/PWM7 I/O Port D2 or PWM7 output.
37
37 36
35 PD3/PWM6 I/O Port D3 or PWM6 output.
-
38
-
- NC
No Connection.
38
39 37
36 PD4/PWM5 I/O Port D4 or PWM5 output.
39
40 38
37 PD5/PWM4 I/O Port D5 or PWM4 output.
40
41 39
38 PWM3
I/O PWM3 output (10V open-drain).
41
42 40
39 HIN
I Hsync Input.
42
43 41
40 VIN
I Vsync input.
WT6148/WT6160
v1.02
Digital Monitor Controller
Weltrend Semiconductor, Inc.
Page 5
43
-
-
- NC
No Connection.
44
44 42
- NC
No Connection.
FUNCTIONAL DESCRIPTION
CPU
8-bit 6502 compatible CPU operates at 6MHz. Address bus is 16-bit and data bus is 8-bit.
The non-maskable interrupt (/NMI) of 6502 is modified to be maskable and is defined as INT0 with higher
priority. The interrupt request (/IRQ) of 6502 is defined as INT1 with lower priority.
Please refer the 6502 reference menu for more detail.
RAM
The 1024 bytes SRAM include :
128 bytes SRAM are from $0080H to $00FFH
256 bytes SRAM are from $0100H to $01FFH
256 bytes SRAM are from $0200H to $02FFH
256 bytes SRAM are from $0300H to $03FFH
128 bytes SRAM are from $0400H to $047FH
The 32 bytes SRAM bit addressible are from $0500H to $05FFH
ROM
For WT6148, ROM address is located from $4000h to $FFFFh.
For WT6160, ROM address is located from $1000h to $FFFFh.
The following addresses are reserved for special purpose :
$FFFAh (low byte) and $FFFBh (high byte) : INT0 interrupt vector.
$FFFCh (low byte) and $FFFDh (high byte) : program reset interrupt vector.
$FFFEh (low byte) and $FFFFh (high byte) : INT1 interrupt vector.
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