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参数资料
| 型号： | EM73MA89B |
| 英文描述： | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 8-EPSOIC T&R |
| 中文描述： | 4，液晶产品位微控制器 |
| 文件页数： | 10/64页 |
| 文件大小： | 331K |
| 代理商： | EM73MA89B |
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18
* This specification are subject to be changed without notice.
10.15.2002 (V1.3)
EM73MA89B
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
Preliminary
P22
32
1
0
Initial value : ***0
*
SOM
Select operation mode
0
DUAL operation mode
1
SLOW operation mode
P14
32
10
Initial value : 0000
ACT
WKS
SINT CPUS
CPUS
CPU status
WKS
Wakeup status
0
DUAL operation mode
0
Wakeup not by internal timer
1
SLOW operation mode
1
Wakeup by internal timer
Port14 is the status register for CPU. P14.0 (CPU status) is a read-only bit. P14.2 (wakeup status) will be
set as "1" when CPU is waked by internal timer. P14.2 will be cleared as "0" when user out data to P14.
P14.1 is the interrupt source selector (refer to interrupt). P14.3 is the speech acknowledge signal (refer to
speech synthesizer control).
IDLE OPERATION MODE
The IDLE operation mode suspends all CPU functions except the low-frequency clock oscillation and the
LCD driver. It keeps the internal status with low power consumption without stopping the slow clock
oscillator and LCD display.
LCD display is available for the IDLE operation mode. The high speed counter and speech synthesizer are
disabled in this mode. The IDLE operation mode will be wakeup and return to the SLOW operation mode by
the internal timing generator or I/O pins (P0(0..3)/WAKEUP 0..3 and P8(0..3)/WAKEUPA..D).
P19
32
10
Initial value : 0000
IDME
SIDR
IDME
Enable IDLE mode
SIDR
Select IDLE releasing condition
0 1
Enable IDLE mode
0 0
P0(0..3), P8(0..3) pin input
* *
no function
0 1
P0(0..3), P8(0..3) pin input and 1 sec signal
1 0
P0(0..3), P8(0..3) pin input and 0.5 sec signal
1 1
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, high speed counter and speech synthesizer are disabled in this mode.
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