UPD78F1506GF-GAT-AX Renesas Electronics America, UPD78F1506GF-GAT-AX Datasheet - Page 777

• Manufacturer Part Number: UPD78F1506GF-GAT-AX
• Description: MCU 16BIT 78K0R/LX3 128-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Lx3r

Specifications of UPD78F1506GF-GAT-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LCD, LVD, POR, PWM, WDT
• Number Of I /o: 78
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x12b, D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0R/Lx3
20.3 Register Controlling Key Interrupt
R01UH0004EJ0401 Rev.4.01
Jul 2, 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
Remark
KR7
KR6
KR5
KR4
KR3
KR2
KR1
KR0
This register controls the KRM0 to KRM7 bits using the KR0 to KR7 signals, respectively.
KRM can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
KRM7 KRM6 KRM5 KRM4 KRM3 KRM2 KRM1 KRM0
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.
n = 0 to 7
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).
Address: FFF37H
KRM
Key return mode register (KRM)
KRMn
KRM7
Figure 20-2. Format of Key Return Mode Register (KRM)
0
1
7
Figure 20-1. Block Diagram of Key Interrupt
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 20 KEY INTERRUPT FUNCTION
3
KRM2
2
KRM1
KRM0
0
INTKR
777