R5F21324ANSP#U1 Renesas Electronics America, R5F21324ANSP#U1 Datasheet - Page 174
R5F21324ANSP#U1
Manufacturer Part Number
R5F21324ANSP#U1
Description
MCU 1KB FLASH 16K ROM 20-LSSOP
Manufacturer
Renesas Electronics America
Series
R8C/3x/32Ar
Datasheet
1.R5F21322ANSPU1.pdf
(629 pages)
Specifications of R5F21324ANSP#U1
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
-
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Under development
R8C/32A Group
REJ09B0458-0020 Rev.0.20
Page 144 of 583
As with other maskable interrupts, the timer RC interrupt, synchronous serial communication unit interrupt, I
bus interface interrupt, and flash memory interrupt 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, 24. Synchronous Serial Communication
Unit (SSU), 25. I
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.
Preliminary specification
Specifications in this manual are tentative and subject to change.
2
C bus Interface, and 30. Flash Memory) for the status register and enable register.
Nov 05, 2008
11. Interrupts
2
C
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