 |
| |
4-bit
Telephone Processor with LCD Driver
| |
W742E/C/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 |
|
| |
|
|
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 |
|
| |
 |
|
