UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 120
UPD78F9222MC(T)-5A4-A
Manufacturer Part Number
UPD78F9222MC(T)-5A4-A
Description
8BIT MCU, 4K FLASH, 256B RAM, 78F9222
Manufacturer
NEC
Datasheet
1.UPD78F9222MCT-5A4-A.pdf
(414 pages)
Specifications of UPD78F9222MC(T)-5A4-A
Controller Family/series
UPD78
No. Of I/o's
17
Ram Memory Size
256Byte
Cpu Speed
10MHz
No. Of Timers
4
No. Of
RoHS Compliant
Core Size
8bit
Program Memory Size
4KB
Oscillator Type
External, Internal
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(12) One-shot pulse output with external trigger
(13) Operation of OVF00 flag
<1> Do not input the external trigger again while the one-shot pulse is output. To output the one-shot pulse
<2> Do not set the 16-bit timer capture/compare registers 000 and 010 (CR000 and CR010) to 0000H.
<1> The OVF00 flag is also set to 1 in the following case.
<2> Even if the OVF00 flag is cleared before the next count clock is counted (before TM00 becomes 0001H)
again, wait until the current one-shot pulse output is completed.
Either of the clear & start mode entered on a match between TM00 and CR000, clear & start at the valid
edge of the TI000 pin, or free-running mode is selected.
When TM00 is counted up from FFFFH to 0000H.
after the occurrence of a TM00 overflow, the OVF00 flag is re-set newly and clear is disabled.
CR000 is set to FFFFH.
↓
↓
Count clock
INTTM000
OVF00
CR000
TM00
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
Figure 6-37. Operation Timing of OVF00 Flag
FFFEH
FFFFH
User’s Manual U16898EJ5V0UD
FFFFH
0000H
0001H
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