UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 95

• Manufacturer Part Number: UPD78F9222MC(T)-5A4-A
• Description: 8BIT MCU, 4K FLASH, 256B RAM, 78F9222
• Manufacturer: NEC

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

6.4
6.4.1
in Figure 6-10 allows operation as an interval timer.
(CR000) beforehand as the interval.
the TM00 value cleared to 0 and the interrupt request signal (INTTM000) is generated.
prescaler mode register 00 (PRM00).
Setting 16-bit timer mode control register 00 (TMC00) and capture/compare control register 00 (CRC00) as shown
The basic operation setting procedure is as follows.
<1> Set the CRC00 register (see Figure 6-10 for the set value).
<2> Set any value to the CR000 register.
<3> Set the count clock by using the PRM00 register.
<4> Set the TMC00 register to start the operation (see Figure 6-10 for the set value).
Caution Changing the CR000 setting during TM00 operation may cause a malfunction. To change the
Remark For how to enable the INTTM000 interrupt, see CHAPTER 12 INTERRUPT FUNCTIONS.
Interrupt requests are generated repeatedly using the count value set in 16-bit timer capture/compare register 000
When the count value of 16-bit timer counter 00 (TM00) matches the value set to CR000, counting continues with
The count clock of the 16-bit timer/event counter can be selected using bits 0 and 1 (PRM000, PRM001) of
Setting
Operation of 16-bit Timer/Event Counter 00
Interval timer operation
setting, refer to 6.5 Cautions Related to 16-bit Timer/Event Counter 00 (17) Changing compare
register during timer operation.
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
User’s Manual U16898EJ5V0UD
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