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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： | 13/64页 |
| 文件大小： | 331K |
| 代理商： | EM73MA89B |
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20
* This specification are subject to be changed without notice.
10.15.2002 (V1.3)
EM73MA89B
4-BIT MICRO-CONTROLLER FOR LCD PRODUCT
Preliminary
TIME BASE INTERRUPT (TBI)
The time base can be used to generate a single fixed frequency interrupt. Eight types of frequencies can be
selected with the "P25" setting.
P25
3
2
1
0
i
nitial value : 0000
P25
NORMAL operation mode
SLOW operation mode
0 0 x x
Interrupt disable
0 1 0 0
Interrupt frequency LXIN / 23 Hz
Reserved
0 1 0 1
Interrupt frequency LXIN / 215 Hz
0 1 1 0
Interrupt frequency LXIN / 25 Hz
Reserved
0 1 1 1
Interrupt frequency LXIN / 214 Hz
1 1 0 0
Interrupt frequency LXIN / 21 Hz
Reserved
1 1 0 1
Interrupt frequency LXIN / 26 Hz
1 1 1 0
Interrupt frequency LXIN / 28 Hz
1 1 1 1
Interrupt frequency LXIN / 210 Hz
1 0 x x
Reserved
TIMER / COUNTER (TIMERA, TIMERB)
Timer/counters support three special functions:
1. Even counter
2. Timer.
3. Pulse-width measurement.
These three functions can be executed by 2 timer/counter independently.
With timerA, the counter data is saved in timer register TAH, TAM, TAL. User can set counter initial
value and read the counter value by instruction "LDATAH(M,L)" and "STATAH(M,L)". With timer B
register is TBH, TBM, TBL and the W/R instruction are "LDATBH (M,L)" and "STATBH (M,L)".
The basic structure of timer/counter is composed by two identical counter module, these two modules can
be set initial timer or counter value to the timer registers, P28 and P29 are the command registers for timerA
and timer B, user can choose different operation modes and internal clock rates by setting these two
registers. When timer/counter overflows, it will generate a TRGA(B) interrupt request to interrupt control
unit.
INTERRUPT CONTROL
TRGA request
P8.3/
TRGA
EVENT COUNTER CONTROL
TIMER CONTROL
internal clock
P28
12 BIT COUNTER
TMSA
IPSA
DATA BUS
P8.1/
TRGB
EVENT COUNTER CONTROL
TIMER CONTROL
internal clock
P29
12 BIT COUNTER
TMSB
IPSB
TRGB request
PULSE-WIDTH MEASUREMENT
CONTROL
PULSE-WIDTH MEASUREMENT
CONTROL
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