UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 261

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

(4) Timing chart
If the setting value of the CMP01 register is N, the setting value of the CMP11 register is M, and the count clock
frequency is f
The carrier output control timing is shown below.
Cautions 1. Be sure to set the CMP11 register when starting the timer count operation (TMHE1 = 1)
Cautions 1. Set the values of the CMP01 and CMP11 registers in a range of 01H to FFH.
2. Set so that the count clock frequency of TMH1 becomes more than 6 times the count clock
2. In the carrier generator mode, three operating clocks (signal selected by CKS12 to CKS10
3. Be sure to set the RMC1 bit before the count operation is started.
CNT
after the timer count operation was stopped (TMHE1 = 0) (be sure to set again even if
setting the same value to the CMP11 register).
frequency of TM51.
bits of TMHMD1 register) or more are required from when the CMP11 register value is
changed to when the value is transferred to the register.
, the carrier clock output cycle and duty are as follows.
Carrier clock output cycle = (N + M + 2)/f
Duty = High-level width : Carrier clock output width = ( M + 1) : (N + M + 2)
CHAPTER 9 8-BIT TIMERS H0 AND H1
User’s Manual U17554EJ4V0UD
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