EM73P461A
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
P19
3
2
1
0
Initial value : 0000
IDME
SIDR
IDME
0 1
* *
Enable IDLE mode
Enable IDLE mode
Reserved
SIDR
0 0
0 1
1 0
1 1
Select IDLE releasing condition
P0(0..3), P8(0..3) pin input
P0(0..3), P8(0..3) pin input and 1 sec signal
P0(0..3), P8(0..3) pin input and 0.5 sec signal
P0(0..3), P8(0..3) pin input and 15.625 ms signal
STOP OPERATION MODE
The STOP operation mode suspends system operation and holds the internal status immediately before the
suspension with low power consumption. This mode will be released by reset or I/O pins (P0(0..3)/
WAKEUP 0..3 or P8(0..3)/WAKEUP A..D).
LCD display and high speed timer/counter with melody output are disabled in the mode.
P16
3
2
1
0
Initial value : 0000
SPME
SWWT
SPME
0 1
* *
Enable STOP mode
Enable STOP mode
Reserved
SWWT Set wake-up warm-up time
0
0
1
1
0
1
0
1
wait normal frequency ready (26/fc)
wait slow frequency ready (214/fs)
Reserved
Reserved
TIME BASE INTERRUPT ( TBI )
The time base can be used to generate a fixed frequency interrupt. There are 8 kinds of frequencies can be
selected by setting P25.
P25
3
2
1
0
initial value : 0000
P25
NORMAL operation mode
Interrupt disable
SLOW operation mode
Interrupt disable
Reserved
Reserved
Reserved
Interrupt frequency LXIN / 214 Hz
Reserved
Interrupt frequency LXIN / 26 Hz
Interrupt frequency LXIN / 28 Hz
Interrupt frequency LXIN / 210 Hz
Reserved
0 0 x x
0 1 0 0
0 1 0 1
0 1 1 0
0 1 1 1
1 1 0 0
1 1 0 1
1 1 1 0
1 1 1 1
1 0 x x
Interrupt frequency LXIN / 23 Hz
Interrupt frequency LXIN / 24 Hz
Interrupt frequency LXIN / 25 Hz
Interrupt frequency LXIN / 214 Hz
Interrupt frequency LXIN / 21 Hz
Interrupt frequency LXIN / 26 Hz
Interrupt frequency LXIN / 28 Hz
Interrupt frequency LXIN / 210 Hz
Reserved
TIMER / COUNTER ( TIMERA, TIMERB )
Timer/counters can support user three special functions:
1. Even counter
2. Timer.
3. Pulse-width measurement.
* This specification are subject to be changed without notice.
12.27.2001
18
ELAN [ ELAN MICROELECTRONICS CORP ]
