UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 237

• 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

7.4.8 Pulse width measurement operation
or by restarting the timer in synchronization with the signal input to the TI00n pin.
bit 0 (OVF0n) of 16-bit timer mode control register 0n (TMC0n). If it is set (to 1), clear it to 0 by software.
TM0n can be used to measure the pulse width of the signal input to the TI00n and TI01n pins.
Measurement can be accomplished by operating the 16-bit timer/event counter 0n in the free-running timer mode
When an interrupt is generated, read the value of the valid capture register and measure the pulse width. Check
TI00n pin
TI01n pin
TI00n pin
TI01n pin
Remark n = 0:
Figure 7-51. Block Diagram of Pulse Width Measurement (Free-Running Timer Mode)
Figure 7-52. Block Diagram of Pulse Width Measurement
n = 0, 1:
detection
detection
detection
detection
Count clock
Count clock
Edge
Edge
Edge
Edge
µ
µ
PD78F0531, 78F0532, 78F0533
PD78F0534, 78F0535, 78F0536, 78F0537, 78F0537D
TMC0n3, TMC0n2
TMC0n3, TMC0n2
(Clear & Start Mode Entered by TI00n Pin Valid Edge Input)
CHAPTER 7 16-BIT TIMER/EVENT COUNTERS 00 AND 01
Operable bits
Operable bits
Capture signal
Capture signal
Capture
Capture
signal
signal
User’s Manual U17260EJ6V0UD
Capture register
Capture register
Timer counter
Timer counter
(CR00n)
(CR00n)
(TM0n)
(TM0n)
Capture register
Capture register
Clear
(CR01n)
(CR01n)
Interrupt signal
(INTTM01n)
Interrupt signal
(INTTM00n)
Interrupt signal
(INTTM01n)
Interrupt signal
(INTTM00n)
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