UPD78F0513AMC-GAA-AX Renesas Electronics America, UPD78F0513AMC-GAA-AX Datasheet - Page 665

• Manufacturer Part Number: UPD78F0513AMC-GAA-AX
• Description: MCU 8BIT 38PIN SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2r

Specifications of UPD78F0513AMC-GAA-AX

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 31
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0/Kx2
21.3 Register Controlling Key Interrupt
R01UH0008EJ0401 Rev.4.01
Jul 15, 2010
(1) Key return mode register (KRM)
(1) 38-pin products of 78K0/KC2
(2) 44-pin and 48-pin products of 78K0/KC2
(3) 78K0/KD2, 78K0/KE2, 78K0/KF2
Cautions 1. If any of the KRMn bits used is set to 1, set bit n (PU7n) of the corresponding pull-up resistor
Remark n = 0, 1:
This register controls the KRMn bit using the KRn signal.
KRM is set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears KRM to 00H.
n = 0 to 3: 44-pin and 48-pin products of 78K0/KC2
n = 0 to 7: 78K0/KD2, 78K0/KE2, 78K0/KF2
2. If KRM is changed, the interrupt request flag may be set. Therefore, disable interrupts and then
3. The bits not used in the key interrupt mode can be used as normal ports.
4. For the 38-pin products of 78K0/KC2, be sure to set bits 2 to 7 of KRM to “0”. For the 44-pin and
Symbol
Symbol
Symbol
register 7 (PU7) to 1.
change the KRM register. Clear the interrupt request flag and enable interrupts.
48-pin products of 78K0/KC2, be sure to set bits 4 to 7 of KRM to “0”.
Address: FF6EH
Address: FF6EH
Address: FF6EH
KRM
KRM
KRM
38-pin products of 78K0/KC2
KRMn
KRM7
Figure 21-2. Format of Key Return Mode Register (KRM)
0
1
7
0
7
0
7
Does not detect key interrupt signal
Detects key interrupt signal
After reset: 00H
After reset: 00H
After reset: 00H
KRM6
6
0
6
0
6
KRM5
5
0
5
0
5
R/W
R/W
R/W
KRM4
Key interrupt mode control
4
0
4
0
4
KRM3
KRM3
CHAPTER 21 KEY INTERRUPT FUNCTION
3
0
3
3
KRM2
KRM2
2
0
2
2
KRM1
KRM1
KRM1
KRM0
KRM0
KRM0
0
0
0
665