UPD70F3771GF-GAT-AX Renesas Electronics America, UPD70F3771GF-GAT-AX Datasheet - Page 1305

• Manufacturer Part Number: UPD70F3771GF-GAT-AX
• Description: MCU 32BIT V850ES/JX3-H 128-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Hr

Specifications of UPD70F3771GF-GAT-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 48MHz
• Connectivity: CAN, CSI, EBI/EMI, I²C, UART/USART, USB
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 96
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 2.85 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

V850ES/JG3-H, V850ES/JH3-H
24.2 Register
24.3 Cautions
R01UH0042EJ0400 Rev.4.00
Sep 30, 2010
(1) Key return mode register (KRM)
(1) If a low level is input to any of the KR0 to KR7 pins, the INTKR signal is not generated even if the falling edge of
(2) If the KRM register is changed, an interrupt request signal (INTKR) may be generated. To prevent this, change the
(3) To use the key interrupt function, be sure to set the port pin to the key return pin and then enable the operation with
another pin is input.
KRM register after disabling interrupts (DI) or masking, then clear the interrupt request flag (KRIC.KRIF bit) to 0,
and enable interrupts (EI) or clear the mask.
the KRM register. To switch from the key return pin to the port pin, disable the operation with the KRM register and
then set the port pin.
The KRM register controls the KRM0 to KRM7 bits using the KR0 to KR7 signals.
This register can be read or written in 8-bit or 1-bit units.
Reset sets this register to 00H.
After reset: 00H
KRM
Caution Rewrite the KRM register after once setting the KRM register to 00H.
Remark
KRMn
KRM7
For the alternate-function pin settings, see Table 4-20 Settings When Port Pins Are
Used for Alternate Functions.
0
1
Does not detect key return signal
Detects key return signal
R/W
KRM6
Address: FFFFF300H
KRM5
KRM4
Control of key return mode
KRM3
CHAPTER 24 KEY INTERRUPT FUNCTION
KRM2
KRM1
KRM0
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