R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 127

• Manufacturer Part Number: R5F21257SNFP#U0
• Description: IC R8C/25 MCU FLASH 52LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/25r

Specifications of R5F21257SNFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, Voltage Detect, WDT
• Number Of I /o: 41
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 52-LQFP
• For Use With: R0K521256S000BE - KIT EVAL STARTER FOR R8C/25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 12.5
INTi Interrupt Control Register (i=0 to 3)
b7 b6 b5 b4 b3 b2 b1 b0
NOTES:
1.
2.
3.
4.
0
Only 0 can be w ritten to the IR bit. (Do not w rite 1.)
Rew rite the interrupt control register w hen the interrupt request w hich is applicable for the register is not generated.
Refer to 12.6.5 Changing Interrupt Control Register Contents.
If the INTiPL bit in the INTEN register is set to 1 (both edges), set the POL bit to 0 (selects falling edge).
The IR bit may be set to 1 (requests interrupt) w hen the POL bit is rew ritten. Refer to 12.6.4 Changing Interrupt
Sources.
Feb 29, 2008
INTiIC Register
Bit Symbol
(b7-b6)
Symbol
INT2IC
INT1IC
INT3IC
INT0IC
ILVL0
ILVL1
ILVL2
POL
(b5)
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—
—
IR
Interrupt priority level select bits
Interrupt request bit
Polarity sw itch bit
Reserved bit
Nothing is assigned. If necessary, set to 0.
When read, the content is undefined.
(2)
Address
Bit Name
005Ah
0055h
0059h
005Dh
(4)
b2 b1 b0
0 0 0 : Level 0 (interrupt disable)
0 0 1 : Level 1
0 1 0 : Level 2
0 1 1 : Level 3
1 0 0 : Level 4
1 0 1 : Level 5
1 1 0 : Level 6
1 1 1 : Level 7
0 : Requests no interrupt
1 : Requests interrupt
0 : Selects falling edge
1 : Selects rising edge
Set to 0.
After Reset
XX00X000b
XX00X000b
XX00X000b
XX00X000b
Function
(3)
12. Interrupts
RW
RW
RW
RW
RW
RW
RW
—
(1)