4-bit Telephone Processor with LCD Driver |
|
W742E/S81A |
W742C81B |
Emulation Body |
- |
W742E81A |
ROM (bit) |
16384x16 |
8192x16 |
RAM (bit) |
2048x4 |
1024x4 |
Main System Clock |
3.58M~400KHz Crystal/ RC Oscillator |
LCD Driver |
40 seg. x 4 com. |
None |
Power Down Mode |
Hold, Stop, Slow Mode |
Sub System Clock |
32.768KHz Crystal |
I/O Port |
12IO, 4I, 8O (RA/RB/RC/RD/RE/RF) |
Interrupt |
5 |
Timer/Counter |
2 Timers/Counters |
Timer/Counter Readable |
Unreadable |
Stack |
16 |
Operating Mode |
Dual-clock |
DTMF Generator |
One Channel |
FSK Generator |
None |
Operation Voltage |
2.4V-6.0V |
Package Pin# |
PQFP 100 |
PDIP 40 |
|
W742S814 |
W742S824 |
W742S819 |
W742S82A |
Emulation Body |
W742E81A |
W742E81A |
W742E81A |
W742E81A |
ROM (bit) |
8192x16 |
12288x16 |
RAM (bit) |
1024x4 |
1536x4 |
Main System Clock |
32768HZ+PLL(3.6M) |
LCD Driver |
20 seg. x 8 com. |
40 seg. x 4 com. |
Power Down Mode |
Hold, Stop, Slow Mode |
Sub System Clock |
32.768Hz |
I/O Port |
12IO, 2I, 4O |
12IO, 4I, 8O |
Interrupt |
5 |
Timer/Counter |
2 Timers/Counters |
Timer/Counter Readable |
Timer0 not readable
Timer1 readable |
Stack |
8 |
16 |
Operating Mode |
Dual-clock |
DTMF Generator |
1 |
FSK Generator |
None |
Operation Voltage |
2.4V-5.5V |
Package Pin# |
QFP 80 |
QFP 80 |
OP |
0 |
3 |
0 |
3 |
|
|
W742C81D |
W742C818 |
Emulation Body |
W742E81A |
- |
ROM (bit) |
16384x16 bits |
RAM (bit) |
2048x4 |
4096x4 |
Main System Clock |
32768Hz+PLL(3.6M) |
3.58M/400KHz
Crystal/RC oscillator |
LCD Driver |
24 seg. x 8 Com LCD. |
Power Down Mode |
Hold, Stop, Slow Mode |
Sub System Clock |
32.768Hz |
I/O Port |
12IO, 4I, 8O |
Interrupt |
5 |
11 |
Timer/Counter |
2 Timers/Counters |
Timer/Counter Readable |
Timer0 not readable
Timer1 readable |
Stack |
16 |
Operating Mode |
Dual-clock operation mode |
DTMF Generator |
1 |
FSK Generator |
None |
Operation Voltage |
2.4V-5.5V |
2.4V-6.0V |
Package Pin# |
QFP 80 |
QFP 100 |
|
W742E/C816 |
W742E/C813 |
W742E/C811 |
Emulation Body |
- |
- |
- |
ROM (bit) |
32768x16 |
16384x16 |
RAM (bit) |
5120x4 |
Main System Clock |
3.58MHz~ 400KHz Crystal or RC Oscillator |
LCD Driver |
40 seg. x 16 (x8) com. |
Power Down Mode |
Hold, Stop, Slow Mode |
Sub System Clock |
32.768KHz Crystal |
I/O Port |
12IO, 12I, 8O (RA/RB/RC/RD/RE/RF/P0/P1) |
Interrupt |
8 |
Timer/Counter |
2 Timers/Counters |
Timer/Counter Readable |
Readable |
Stack |
16 |
Operating Mode |
Dual-clock |
DTMF Generator |
One Channel |
FSK Generator |
One channel |
None |
Operation Voltage |
2.4V-6.0V |
Package Pin# |
PQFP100 |
|