UPD17933 Datasheet, PDF (133/252 Pages) NEC – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

µPD17933, 17934
Figure 13-9. Configuration of Timer 0 Counter Clock Selection Register
Name
Flag symbol
b3 b2 b1 b0
Timer 0 counter clock selection T T T T
MM MM
00 00
ER CC
NE KK
S10
Address
(BANK15)
2BH
Read/Write
R/W
0 0 TM0
0 1 TM1
1 0 75 kHz (13.3 µs)
1 1 25 kHz (40 µs)
Sets basic clock of timer 0 counter
Resets timer 0 counter (valid on writing)
0
Does not change
1
Resets counter
0
Stops
1
Starts
Starts or stops timer 0
Reset by RESET pin
WDT&SP reset
Clock stop
0000
Caution When the TM0RES flag is read, 0 is always read.
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