R5F21324CNSP#U0 Renesas Electronics America, R5F21324CNSP#U0 Datasheet - Page 158

• Manufacturer Part Number: R5F21324CNSP#U0
• Description: MCU 1KB FLASH 16K ROM 20-LSSOP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/32Cr

Specifications of R5F21324CNSP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, PWM, Voltage Detect, WDT
• Number Of I /o: 15
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-LSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/32C Group
REJ09B0573-0100 Rev.1.00 Dec. 18, 2009
Page 129 of 573
11.2.3
Notes:
After Reset
1. Only 0 can be written to the IR bit. (Do not write 1 to this bit.)
2. If the INTiPL bit in the INTEN register is set to 1 (both edges), set the POL bit to 0 (falling edge selected).
3. The IR bit may be set to 1 (interrupt requested) when the POL bit is rewritten. Refer to 11.8.4 Changing
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 0059h (INT1IC), 005Ah (INT3IC), 005Dh (INT0IC)
Interrupt Sources.
Rewrite the interrupt control register when an interrupt request corresponding to the register is not generated.
Refer to 11.8.5 Rewriting Interrupt Control Register.
Symbol
Symbol
Bit
ILVL0
ILVL1
ILVL2
POL
INTi Interrupt Control Register (INTiIC) (i = 0, 1, 3)
IR
—
—
—
b7
—
X
Interrupt priority level select bit
Interrupt request bit
Polarity switch bit
Reserved bit
Nothing is assigned. If necessary, set to 0.
When read, the content is undefined.
b6
—
X
Bit Name
(3)
b5
—
0
POL
b4
0
b2 b1 b0
0: No interrupt requested
1: Interrupt requested
0: Falling edge selected
1: Rising edge selected
Set to 0.
0 0 0: Level 0 (interrupt disabled)
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
b3
IR
X
ILVL2
b2
0
Function
(2)
ILVL1
b1
0
ILVL0
b0
0
11. Interrupts
R/W
R/W
R/W
R/W
R/W
R/W
R/W
(1)
—