UPD78F1154GK-GAK-AX NEC, UPD78F1154GK-GAK-AX Datasheet - Page 57

• Manufacturer Part Number: UPD78F1154GK-GAK-AX
• Description: 16BIT MCU, 128K FLASH, 8K RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F1154GK-GAK-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 70
• Ram Memory Size: 8192Byte
• Cpu Speed: 20MHz
• No. Of Timers: 9
• No. Of: RoHS Compliant
• Core Size: 16bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

7.12 Key Return Signal Detector
depending on the setting of key return mode register (KRM).
A key interrupt (INTKR) can be generated by inputting the falling edge to key interrupt input pins (KR0 to KR7),
The key interrupt function uses the following register.
(1) Key return mode register (KRM)
KR7
KR6
KR5
KR4
KR3
KR2
KR1
KR0
This register is used to enable or disable the key input signals of the KR0 to KR7 pins by the corresponding
bits, KRM0 to KRM7.
KRM7 KRM6 KRM5 KRM4 KRM3 KRM2 KRM1 KRM0
Key return mode register (KRM)
Figure 7-12. Block Diagram of Key Return Signal Detector
Preliminary Product Information U17892EJ2V0PM
78K0R/KF3
INTKR
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