UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 219

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

(4) Timing of holding data by capture register
(5) Setting valid edge
(6) Re-triggering one-shot pulse
(a) When the valid edge is input to the TI00n/TI01n pin and the reverse phase of the TI00n pin is detected while
(b) The values of CR00n and CR01n are not guaranteed after 16-bit timer/event counter 0n stops.
Set the valid edge of the TI00n pin while the timer operation is stopped (TMC0n3 and TMC0n2 = 00). Set the
valid edge by using ES0n0 and ES0n1.
Make sure that the trigger is not generated while an active level is being output in the one-shot pulse output mode.
Be sure to input the next trigger after the current active level is output.
Remark n = 0 to 3
CR00n/CR01n is read, CR01n performs a capture operation but the read value of CR00n/CR01n is not
guaranteed. At this time, an interrupt signal (INTTM00n/INTTM01n) is generated when the valid edge of the
TI00n/TI01n pin is detected (the interrupt signal is not generated when the reverse-phase edge of the TI00n
pin is detected).
When the count value is captured because the valid edge of the TI00n/TI01n pin was detected, read the
value of CR00n/CR01n after INTTM00n/INTTM01n is generated.
Value captured to CR01n
Capture read signal
TM0n count value
Count pulse
Edge input
INTTM01n
Figure 7-56. Timing of Holding Data by Capture Register
CHAPTER 7 16-BIT TIMER/EVENT COUNTERS 00 TO 03
X
Capture operation
N
User’s Manual U17554EJ4V0UD
N + 1
N + 2
N + 1
M
Capture operation is performed
but read value is not guaranteed.
M + 1
M + 2
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