UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 142
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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If the setting value of the CMP01 register is N, the setting value of the CMP11 register is M, and the count clock
<4> When 8-bit timer counter H1 and the CMP11 register match, TOH1 output becomes inactive and the
<5> By performing procedures <3> and <4> repeatedly, a pulse with an arbitrary duty can be obtained.
<6> To stop the count operation, set TMHE1 = 0.
Cautions 1. In PWM output mode, the setting value for the CMP11 register can be changed during timer
compare register to be compared with 8-bit timer counter H1 is changed from the CMP11 register to the
CMP01 register.
generated.
CNT
2. Be sure to set the CMP11 register when starting the timer count operation (TMHE1 = 1) after
, the PWM pulse output cycle and duty are as follows.
PWM pulse output cycle = (N+1)/f
Duty = Active width : Total width of PWM = (M + 1) : (N + 1)
count operation. However, three operation clocks (signal selected using the CKS12 to
CKS10 bits of the TMHMD1 register) or more are required to transfer the register value after
rewriting the CMP11 register value.
the timer count operation was stopped (TMHE1 = 0) (be sure to set again even if setting the
same value to the CMP11 register).
At this time, 8-bit timer counter H1 is not cleared and the INTTMH1 signal is not
CHAPTER 8 8-BIT TIMER H1
User’s Manual U16898EJ5V0UD
CNT
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