R5F21236KFP#U0 Renesas Electronics America, R5F21236KFP#U0 Datasheet - Page 65

• Manufacturer Part Number: R5F21236KFP#U0
• Description: IC R8C/23 MCU FLASH 48LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/23r

Specifications of R5F21236KFP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: CAN, I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, Voltage Detect, WDT
• Number Of I /o: 41
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 48-LQFP
• For Use With: RCDK8C - KIT DEV EVAL FOR CAN R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
6.3
Table 6.3
NOTES:
Table 6.3 lists the Procedure for Setting Bits Associated with Voltage Monitor 2 Interrupt and Reset. Figure 6.8
shows an Example of Voltage Monitor 2 Interrupt and Voltage Monitor 2 Reset Operation. To use the voltage
monitor 2 interrupt or voltage monitor 2 reset to exit stop mode, set the VW2C1 bit in the VW2C register to 1
(digital filter disabled).
1. Set the VW2C7 bit to 1 (when VCC reaches Vdet2 or below) for the voltage monitor 2 reset.
2. When the VW2C0 bit is set to 0, steps 3, 4, and 5 can be executed simultaneously (with 1
Step
4
5
1
2
3
6
7
8
9
(2)
(2)
instruction).
Voltage Monitor 2 Interrupt and Voltage Monitor 2 Reset
Set the VCA27 bit in the VCA2 register to 1 (voltage detection 2 circuit enabled)
Wait for td(E-A)
Select the sampling clock of the digital filter
by the VW2F0 to VW2F1 bits in the VW2C
register
Set the VW2C1 bit in the VW2C register to 0
(digital filter enabled)
Set the VW2C6 bit in
the VW2C register to
0 (voltage monitor 2
interrupt mode)
Set the VW2C2 bit in the VW2C register to 0 (passing of Vdet2 is not detected)
Set the CM14 bit in the CM1 register to 0
(low-speed on-chip oscillator on)
Wait for the sampling clock of the digital filter
x 4 cycles
Set the VW2C0 bit in the VW2C register to 1 (enables voltage monitor 2 interrupt/reset)
Procedure for Setting Bits Associated with Voltage Monitor 2 Interrupt and Reset
Voltage Monitor 2
Interrupt
Page 43 of 501
When Using Digital Filter
Set the VW2C6 bit in
the VW2C register to
1 (voltage monitor 2
reset mode)
Voltage Monitor 2
Reset
Select the timing of the interrupt and reset
request by the VW2C7 bit in the VW2C
register
Set the VW2C1 bit in the VW2C register to 1
(digital filter disabled)
Set the VW2C6 bit in
the VW2C register to
0 (voltage monitor 2
interrupt mode)
−
− (no wait time)
Voltage Monitor 2
Interrupt
(1)
When Not Using Digital Filter
6. Voltage Detection Circuit
Set the VW2C6 bit in
the VW2C register to
1 (voltage monitor 2
reset mode)
Voltage Monitor 2
Reset