UPD78F9234MC-5A4-A Datasheet, PDF (134/419 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 7 8-BIT TIMER 80
7.3 Register Controlling 8-bit Timer 80
8-bit timer 80 is controlled by 8-bit timer mode control register 80 (TMC80).
(1) 8-bit timer mode control register 80 (TMC80)
This register is used to enable or stop the operation of 8-bit timer/counter 80 (TM80), and to set the count
clock of TM80.
This register is set by using a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears TMC80 to 00H.
Figure 7-4. Format of 8-bit Timer Mode Control Register 80 (TMC80)
Address: FFCCH After reset: 00H R/W
Symbol
<7>
6
5
4
3
2
1
0
TMC80 TCE80
0
0
0
0
TCL801
TCL800
0
TCE80
0
1
Control of operation of TM80
Stop operation (clear TM80 to 00H).
Enable operation.
TCL801
TCL800
Selection of count clock of 8-bit timer 80
fXP = 8.0 MHz
fXP = 10.0 MHz
0
0
fXP/2⁶
125 kHz
156.3 kHz
0
1
fXP/2⁸
31.25 kHz
39.06 kHz
1
0
fXP/2¹⁰
7.81 kHz
9.77 kHz
1
1
fXP/2¹⁶
0.12 kHz
0.15 kHz
Cautions 1. Be sure to set TMC80 after stopping the timer operation.
2. Be sure to clear bits 0 and 6 to 0.
Remark fXP: Oscillation frequency of clock to peripheral hardware
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User’s Manual U17446EJ5V0UD