UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 221

• Manufacturer Part Number: UPD78F0537DGA(T)-9EV-A
• Description: 8BIT MCU, 128K FLASH, 7KB RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F0537DGA(T)-9EV-A

• Controller Family/series: UPD78
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

<R>
<R>
(2) Free-running timer mode operation
Compare match interrupt
Compare match interrupt
This is an application example where two compare registers are used in the free-running timer mode.
The TO0n output level is reversed each time the count value of TM0n matches the set value of CR00n or CR01n.
When the count value matches the register value, the INTTM00n or INTTM01n signal is generated.
(CR00n: compare register, CR01n: capture register)
TI00n pin
Remark n = 0:
(TMC0n3, TMC0n2)
Compare register
Compare register
TM0n register
Operable bits
TO0n output
n = 0, 1:
(INTTM00n)
(INTTM01n)
Count clock
OVF0n bit
(CR00n)
(CR01n)
FFFFH
0000H
detection
TMC0n3, TMC0n2
Edge
Operable bits
µ
µ
PD78F0531, 78F0532, 78F0533
PD78F0534, 78F0535, 78F0536, 78F0537, 78F0537D
Figure 7-38. Timing Example of Free-Running Timer Mode
• TOC0n = 13H, PRM0n = 00H, CRC0n = 00H, TMC0n = 04H
Figure 7-39. Block Diagram of Free-Running Timer Mode
CHAPTER 7 16-BIT TIMER/EVENT COUNTERS 00 AND 01
(CR00n: Compare Register, CR01n: Compare Register)
00
(CR00n: Compare Register, CR01n: Capture Register)
Capture signal
01
M
N
N
M
User’s Manual U17260EJ6V0UD
Capture register
Timer counter
0 write clear
(CR01n)
(TM0n)
Compare register
N
(CR00n)
M
Match signal
0 write clear
N
M
controller
Output
0 write clear
TO0n output
N
Interrupt signal
(INTTM00n)
Interrupt signal
(INTTM01n)
M
0 write clear
TO0n pin
00
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