R5F212B7SNFP#U0 Renesas Electronics America, R5F212B7SNFP#U0 Datasheet - Page 569

• Manufacturer Part Number: R5F212B7SNFP#U0
• Description: IC R8C/2B MCU FLASH 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/2Br

Specifications of R5F212B7SNFP#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: 55
• 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; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 64-LQFP
• For Use With: R0K5212D8S001BE - KIT STARTER FOR R8C/2DR0K5212D8S000BE - KIT DEV FOR R8C/2D
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/2A Group, R8C/2B Group
Rev.2.00
REJ09B0324-0200
Figure 22.1
22.2.4
The IR bit in the interrupt control register may be set to 1 (interrupt requested) when the interrupt source
changes. When using an interrupt, set the IR bit to 0 (no interrupt requested) after changing the interrupt source.
In addition, changes of interrupt sources include all factors that change the interrupt sources assigned to
individual software interrupt numbers, polarities, and timing. Therefore, if a mode change of a peripheral
function involves interrupt sources, edge polarities, and timing, set the IR bit to 0 (no interrupt requested) after
the change. Refer to the individual peripheral function for its related interrupts.
Figure 22.1 shows an Example of Procedure for Changing Interrupt Sources.
Nov 26, 2007
Changing Interrupt Sources
Example of Procedure for Changing Interrupt Sources
NOTES:
IR bit:
1. Execute the above settings individually. Do not execute two
2. To prevent interrupt requests from being generated,
3. Refer to 12.6.5 Changing Interrupt Control Register
Page 547 of 580
or more settings at once (by one instruction).
disable the peripheral function before changing the
interrupt source. In this case, use the I flag if all maskable
interrupts can be disabled. If all maskable interrupts cannot
be disabled, use bits ILVL0 to ILVL2 of the interrupt whose
source is changed.
Contents for the instructions to be used and usage notes.
The interrupt control register bit of an
interrupt whose source is changed.
Set the IR bit to 0 (interrupt not requested)
Change interrupt source (including mode
using the MOV instruction
Interrupt source change
of peripheral function)
Disable interrupts
Enable interrupts
Change completed
(2, 3)
(2, 3)
(3)
22. Usage Notes