R5F21236JFP#U0 Renesas Electronics America, R5F21236JFP#U0 Datasheet - Page 65
![IC R8C/23 MCU FLASH 48LQFP](/photos/28/61/286102/48-lqfp__plqp0048kb-a_sml.jpg)
R5F21236JFP#U0
Manufacturer Part Number
R5F21236JFP#U0
Description
IC R8C/23 MCU FLASH 48LQFP
Manufacturer
Renesas Electronics America
Series
M16C™ M16C/R8C/Tiny/23r
Datasheet
1.R5F21237DFPU0.pdf
(551 pages)
Specifications of R5F21236JFP#U0
Core Processor
R8C
Core Size
16-Bit
Speed
20MHz
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 ~ 85°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
-
Available stocks
Company
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Manufacturer
Quantity
Price
Part Number:
R5F21236JFP#U0R5F21236JFP
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
R5F21236JFP#U0R5F21236JFP#U1
Manufacturer:
Renesas Electronics America
Quantity:
135
Part Number:
R5F21236JFP#U0R5F21236JFP#U1
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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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
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