UPD78F1009GB-GAH-AX Renesas Electronics America, UPD78F1009GB-GAH-AX Datasheet - Page 907

• Manufacturer Part Number: UPD78F1009GB-GAH-AX
• Description: MCU 16BIT 78K0R/KX3-L 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3-Lr

Specifications of UPD78F1009GB-GAH-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 3K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0R/Kx3-L
19.3 Register Controlling Key Interrupt
R01UH0106EJ0300 Rev.3.00
Oct 01, 2010
(1) Key return mode register (KRM)
Cautions 1. If any of the KRM0 to KRM7 bits used is set to 1, set bits 0 to 7 (PU70 to PU77) of the
Remarks 1. n = 0 to 7
This register controls the KRM0 to KRM7 bits using the KR0 to KR7 signals, respectively.
The KRM register can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
2. An interrupt will be generated if the target bit of the KRM register is set while a low level is being
3. The bits not used in the key interrupt mode can be used as normal ports.
2. KR0 to KR5: 78K0R/KC3-L
Symbol
corresponding pull-up resistor register 7 (PU7) to 1.
input to the key interrupt input pin. To ignore this interrupt, set the KRM register after disabling
interrupt servicing by using the interrupt mask flag. Afterward, clear the interrupt request flag
and enable interrupt servicing after waiting for the key interrupt input low-level width (250 ns or
more).
KR0 to KR7: 78K0R/KD3-L, 78K0R/KE3-L, 78K0R/KF3-L, and 78K0R/KG3-L
Address: FFF37H
KRM
KRMn
KRM7
Figure 19-2. Format of Key Return Mode Register (KRM)
0
1
7
Does not detect key interrupt signal
Detects key interrupt signal
After reset: 00H
KRM6
6
KRM5
5
R/W
KRM4
Key interrupt mode control
4
KRM3
CHAPTER 19 KEY INTERRUPT FUNCTION
3
KRM2
2
KRM1
KRM0
0
907