Electronics America 8-Bit Single-Chip Microcontrollers User's Manual

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CHAPTER 9 8-BIT TIMER/EVENT COUNTERS 1 AND 2

(2) 8-bit timer mode control register (TMC1)

This register enables/stops operation of 8-bit timer registers 1 and 2 and sets the operating mode of 8-bit timer

TMC1 is set with a 1-bit or 8-bit memory manipulation instruction.

RESET input sets TMC1 to 00H.

Figure 9-5. 8-Bit Timer Mode Control Register 1 Format

Cautions 1. Switch the operating mode after stopping timer operation.

2. When used as 16-bit timer register, TCE1 should be used for control enable/stop.

<0><1>234567Symbol

TCE1

FF49H 00H R/W

Address After Reset R/W

TCE2TMC1200000

TMC1

TCE1

8-Bit Timer Register 1 Operation Control

Operation stop (TM1 clear to 0)

Operation enable

TCE2

8-Bit Timer Register 2 Operation Control

Operation stop (TM2 clear to 0)

Operation enable

TMC12

Operating Mode Selection

8-Bit timer register × 2 channel mode (TM1, TM2)

16-Bit timer register × 1 channel mode (TMS)