UPD78F0988AGC-8BS Renesas Electronics America, UPD78F0988AGC-8BS Datasheet - Page 151

• Manufacturer Part Number: UPD78F0988AGC-8BS
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0988AGC-8BS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

7.5 Operation of 8-Bit Timer/Event Counter
7.5.1 Interval timer (8-bit) operation
intervals specified by the count values preset to corresponding 8-bit compare register 5n (CR5n).
CR5n, the value of TM5n is cleared to 0, TM5n continues counting, and at the same time, an interrupt request signal
(INTTM5n) is generated.
refer to 7.6 Notes on 8-Bit Timer/Event Counter (2).
The 8-bit timer/event counters operate as interval timers that repeatedly generate an interrupt request at time
When the count values of 8-bit timer counter 5n (TM5n) match the values set to corresponding compare register
The count clock of TM5n can be selected by bits 0 to 2 (TCL5n0 to TCL5n2) of timer clock select register 5n (TCL5n).
For the operation to be performed when the value of the compare register is changed during timer count operation,
<Setting>
Remark n = 0 to 2
(a) Basic operation
Remarks 1. Interval time = (N + 1)
TM5n count value
<1> Set each register.
<2> The count operation is started when TCE5n is set to 1.
<3> INTTM5n occurs when the values of TM5n and CR5n Match (TM5n is cleared to 00H).
<4> After that, INTTM5n repeatedly occurs at the same interval. To stop the count operation, clear TCE5n to 0.
Count clock
INTTM5n
• TCL5n:
• CR5n:
• TMC5n:
CR5n
TO5n
2. n = 0 to 2
Count starts
00H
t
Selects count clock.
Compare value
Selects clear & start mode entered on match between TM5n and CR5n
(TMC5n = 0000
N
Figure 7-11. Interval Timer Operation Timing (1/3)
01H
Interval time
CHAPTER 7 8-BIT TIMER/EVENT COUNTER
Interrupt request acknowledged Interrupt request acknowledged
t: N = 00H to FFH
User’s Manual U13029EJ7V1UD
0B
N
Clear
00H
= don’t care).
N
01H
Interval time
N
Clear
00H
N
01H
Interval time
N
N
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