UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 124

• 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

124
(23) External clock limitation
<1> When using an input pulse of the TI000 pin as a count clock (external trigger), be sure to input the pulse
<2> When an external waveform is input to 16-bit timer/event counter 00, it is sampled by the noise limiter
width which satisfies the AC characteristics. For the AC characteristics, refer to CHAPTER 21 and
CHAPTER 22 ELECTRICAL SPECIFICATIONS.
circuit and thus an error occurs on the timing to become valid inside the device.
Remark The count clock (f
Input pulse through
noise limiter circuit
Count clock (f
mode register 00 (PRM00).
TI000
sam
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
)
sam
) can be selected using bits 0 and 1 (PRM000, PRM001) of prescaler
User’s Manual U16898EJ5V0UD
Sampling time on filter