R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 206
R5F21346CNFP#U0
Manufacturer Part Number
R5F21346CNFP#U0
Description
MCU 1KB FLASH 32K ROM 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/3x/34Cr
Datasheet
1.R5F21346CNFPU0.pdf
(759 pages)
Specifications of R5F21346CNFP#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
43
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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R8C/34C Group
REJ09B0586-0100 Rev.1.00 Jan 13, 2010
Page 173 of 723
As with other maskable interrupts, the timer RC interrupt, timer RD (timer RD0) interrupt, timer RD (timer RD1)
interrupt, synchronous serial communication unit interrupt, I
are controlled by the combination of the I flag, IR bit, bits ILVL0 to ILVL2, and IPL. However, since each
interrupt source is generated by a combination of multiple interrupt request sources, the following differences from
other maskable interrupts apply:
•
•
•
•
•
Refer to chapters of the individual peripheral functions (19. Timer RC, 20. Timer RD, 25. Synchronous Serial
Communication Unit (SSU), 26. I
register.
For the interrupt control register, refer to 11.3 Interrupt Control.
When bits in the enable register are set to 1 and the corresponding bits in the status register are set to 1 (interrupt
enabled), the IR bit in the interrupt control register is set to 1 (interrupt requested).
When either bits in the status register or the corresponding bits in the enable register, or both are set to 0, the IR
bit is set to 0 (no interrupt requested).
That is, even if the interrupt is not acknowledged after the IR bit is set to 1, the interrupt request will not be
retained.
Also, the IR bit is not set to 0 even if 0 is written to this bit.
Individual bits in the status register are not automatically set to 0 even if the interrupt is acknowledged.
The IR bit is also not automatically set to 0 when the interrupt is acknowledged.
Set individual bits in the status register to 0 in the interrupt routine. Refer to the status register figure for how to
set individual bits in the status register to 0.
When multiple bits in the enable register are set to 1 and other request sources are generated after the IR bit is set
to 1, the IR bit remains 1.
When multiple bits in the enable register are set to 1, use the status register to determine which request source
causes an interrupt.
2
C bus Interface, and 31. Flash Memory) for the status register and enable
2
C bus interface interrupt, and flash memory interrupt
11. Interrupts
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