UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 143

• 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

(2) Timing chart
8-bit timer counter H1
<1> The count operation is enabled by setting the TMHE1 bit to 1. Start 8-bit timer counter H1 by masking one
<2> When the values of 8-bit timer counter H1 and the CMP01 register match, the TOH1 output level is inverted,
<3> When the values of 8-bit timer counter H1 and the CMP11 register match, the level of the TOH1 output is
<4> Clearing the TMHE1 bit to 0 during timer H1 operation makes the INTTMH1 signal and TOH1 output inactive.
The operation timing in PWM output mode is shown below.
Caution Make sure that the CMP11 register setting value (M) and CMP01 register setting value (N) are
(TOLEV1 = 0)
(TOLEV1 = 1)
Count clock
count clock to count up. At this time, TOH1 output remains inactive (when TOLEV1 = 0).
the value of 8-bit timer counter H1 is cleared, and the INTTMH1 signal is output.
returned. At this time, the 8-bit timer counter value is not cleared and the INTTMH1 signal is not output.
INTTMH1
TMHE1
CMP01
CMP11
TOH1
TOH1
within the following range.
00H ≤ CMP11 (M) < CMP01 (N) ≤ FFH
<1>
00H 01H
Figure 8-9. Operation Timing in PWM Output Mode (1/4)
(a) Basic operation (00H < CMP11 < CMP01 < FFH)
A5H 00H 01H 02H
CHAPTER 8 8-BIT TIMER H1
User’s Manual U16898EJ5V0UD
<2>
A5H
01H
<3>
A5H 00H
01H 02H
A5H 00H
<4>
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