upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 147

• Manufacturer Part Number: upd78f0730
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

6.4.5 Free-running timer operation
running timer mode), 16-bit timer/event counter 00 continues counting up in synchronization with the count clock.
When it has counted up to FFFFH, the overflow flag (OVF00) is set to 1 at the next clock, and TM00 is cleared (to
0000H) and continues counting. Clear OVF00 to 0 by executing the CLR instruction via software.
(1) Free-running timer mode operation
When bits 3 and 2 (TMC003 and TMC002) of 16-bit timer mode control register 00 (TMC00) are set to 01 (free-
The following three types of free-running timer operations are available.
• Both CR000 and CR010 are used as compare registers.
• One of CR000 or CR010 is used as a compare register and the other is used as a capture register.
• Both CR000 and CR010 are used as capture registers.
Remarks 1. For the setting of the I/O pins, see 6.3 (6) Port mode register 0 (PM0).
(CR000: compare register, CR010: compare register)
Count clock
2. For how to enable the INTTM000 signal interrupt, see CHAPTER 13 INTERRUPT FUNCTIONS.
TMC003, TMC002
Operable bits
Figure 6-32. Block Diagram of Free-Running Timer Mode
(CR000: Compare Register, CR010: Compare Register)
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
Preliminary User’s Manual U19014EJ1V0UD
Compare register
Timer counter
Match signal
(CR010)
(TM00)
Compare register
(CR000)
Match signal
controller
Output
Interrupt signal
(INTTM000)
Interrupt signal
(INTTM010)
TO00 pin
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