R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 66
![IC R8C/23 MCU FLASH 48-LQFP](/photos/12/38/123822/r5f21238dfp_u0_sml.jpg)
R5F21238DFP#U0
Manufacturer Part Number
R5F21238DFP#U0
Description
IC R8C/23 MCU FLASH 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/23r
Specifications of R5F21238DFP#U0
Core Size
16/32-Bit
Program Memory Size
64KB (64K x 8)
Peripherals
POR, Voltage Detect, WDT
Core Processor
R8C
Speed
20MHz
Connectivity
CAN, I²C, LIN, SIO, SSU, UART/USART
Number Of I /o
41
Program Memory Type
FLASH
Ram Size
3K 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
No. Of I/o's
41
Ram Memory Size
3KB
Cpu Speed
20MHz
No. Of Timers
4
Digital Ic Case Style
LQFP
Embedded Interface Type
CAN, I2C, UART
Rohs Compliant
Yes
Cpu Family
R8C
Device Core Size
16b
Frequency (max)
20MHz
Interface Type
I2C/UART
Total Internal Ram Size
3KB
# I/os (max)
41
Number Of Timers - General Purpose
5
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
3V
On-chip Adc
12-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
48
Package Type
LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
RCDK8C - KIT DEV EVAL FOR CAN R8C/23R0K521237S000BE - KIT DEV RSK R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
Eeprom Size
-
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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- Download datasheet (6Mb)
R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
Figure 6.8
When the VW2C1 bit is set
to 0 (digital filter enabled)
When the VW2C1 bit is
set to 1 (digital filter
disabled) and the
VW2C7 bit is set to 0
(Vdet2 or above)
When the VW2C1 bit is
set to 1 (digital filter
disabled) and the
VW2C7 bit is set to 1
(Vdet2 or below)
VCA13 : Bit in VCA1 register
VW2C1, VW2C2, VW2C6, VW2C7 : Bit in VW2C register
Example of Voltage Monitor 2 Interrupt and Voltage Monitor 2 Reset Operation
VCA13 bit
VW2C2 bit
Voltage monitor 2
interrupt request
(VW2C6 = 0)
Internal reset signal
(VW2C6 = 1)
VW2C2 bit
Voltage monitor 2
interrupt request
(VW2C6 = 0)
VW2C2 bit
Voltage monitor 2
interrupt request
(VW2C6 = 0)
Internal reset signal
(VW2C6 = 1)
The above applies to the following conditions.
NOTE:
• VCA27 bit in VCA2 register = 1 (voltage detection 2 circuit enabled)
• VW2C0 bit in VW2C register = 1 (enables voltage monitor 2 interrupt and voltage monitor 2 reset)
1. When the voltage monitor 1 reset is not used, set the power supply to VCC ≥ 2.7.
Page 44 of 501
2.7 V
Vdet2
(1)
VCC
1
0
1
0
1
0
1
0
Sampling clock of digital filter
x 4 cycles
Set to 0 by interrupt
request acknowledgement
Set to 0 by a program
Set to 0 by interrupt request
acknowledgement
Set to 0 by a program
Sampling clock of digital filter
x 4 cycles
6. Voltage Detection Circuit
Set to 0 by a program
Set to 0 by interrupt
request
acknowledgement
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