upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 128

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

6.4.2 Square wave output operation
TO00 pin by setting the 16-bit timer output control register 00 (TOC00) to 03H.
CR000), the counting operation is started in synchronization with the count clock.
(INTTM000) is generated, and output of the TO00 pin is inverted. This TO00 pin output that is inverted at fixed
intervals enables TO00 to output a square wave.
128
When 16-bit timer/event counter 00 operates as an interval timer (see 6.4.1), a square wave can be output from the
When TMC003 and TMC002 are set to 11 (count clear & start mode entered upon a match between TM00 and
When the value of TM00 later matches the value of CR000, TM00 is cleared to 0000H, an interrupt signal
Remarks 1. For the setting of I/O pins, see 6.3 (6) Port mode register 0 (PM0).
Compare match interrupt
(TMC003, TMC002)
Count clock
2. For how to enable the INTTM000 signal interrupt, see CHAPTER 13 INTERRUPT FUNCTIONS.
Compare register
TO00 pin output
TM00 register
Operable bits
(INTTM000)
TMC003, TMC002
Figure 6-16. Basic Timing Example of Square Wave Output Operation
Operable bits
(CR000)
0000H
Figure 6-15. Block Diagram of Square Wave Output Operation
00
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
Preliminary User’s Manual U19014EJ1V0UD
Interval
(N + 1)
N
16-bit counter (TM00)
CR000 register
Clear
Interval
(N + 1)
Match signal
N
11
N
Interval
(N + 1)
N
controller
Output
INTTM000 signal
Interval
(N + 1)
N
TO00 pin