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UPD17P136ACT Datasheet(PDF) 133 Page - NEC

Part # UPD17P136ACT
Description  4-BIT SINGLE-CHIP MICROCONTROLLER
PDF  292 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD17P136ACT Datasheet(HTML) 133 Page - NEC

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CHAPTER 13 PERIPHERAL HARDWARE
114
Figure 13-3. Timer 1 Mode Register
RF : 12H
Read/write
Initial value when reset
Bit 3
TM1EN
1
R/W
Bit 2
TM1RES
0
Bit 1
TM1CK1
0
Bit 0
TM1CK0
0
TM1CK1
0
0
1
1
TM1CK0
0
1
0
1
Selects count pulse of timer 1
fX/512
fX/1024
fX/256
Count up signal from timer 0
TM1RES
0
Resets timer 1
Does not affect timer 1
Resets timer 1 count register and IRQTM
1
1
TM1EN
0
1
Starts timer 1
Stops counting by timer 1
Starts counting by timer 1
Remark
Remark
TM1EN can be used as a status flag that
detects the counting status of timer 0
(1: counting in progress, 0: counting is stopped).
TM1RES is automatically cleared to 0 after it
has been set to 1. This bit is always 0 when
it is read.



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