R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 424
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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R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
Figure 19.3
A/D Control Register 1
A/D Control Register 2
A/D Register
(b15)
b7 b6 b5 b4
NOTES:
b7 b6 b5 b4
NOTE:
b7
0 0
1.
2.
3. When the VCUT bit is set to 1 (connected) from 0 (not connected), w ait for 1 µs or more before starting A/D
1.
If the ADCON1 register is rew ritten during A/D conversion, the conversion result is indeterminate.
Set the BITS bit to 0 (8-bit mode) in repeat mode.
conversion.
If the ADCON2 register is rew ritten during A/D conversion, the conversion result is indeterminate.
b3 b2
b3 b2 b1
0
0 0
0 0
Registers ADCON1, ADCON2, and AD
b1 b0
(b8)
b0
b0
0
b7
When BITS bit in ADCON1 register is set to 1
(10-bit mode)
8 low -order bits in A/D conversion result
2 high-order bits in A/D conversion result
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
Bit Symbol
Bit Symbol
ADCON1
ADCON2
(b2-b0)
(b7-b6)
(b3-b1)
(b7-b4)
Symbol
Symbol
(1)
(1)
CKS1
VCUT
Page 402 of 501
BITS
SMP
—
—
—
—
Reserved bit
8/10-bit mode select bit
Frequency select bit 1
Vref connect bit
Reserved Bit
A/D conversion method select bit
Reserved bit
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
b0
Address
Bit Name
00D7h
Address
Bit Name
00D4h
(3)
Symbol
(2)
AD
Set to 0
0 : 8-bit mode
1 : 10-bit mode
Refer to a description of the CKS0 bit in the
ADCON0 register function
0 : Vref not connected
1 : Vref connected
Set to 0
Function
When BITS bit in ADCON1 register is set to 0
(8-bit mode)
A/D conversion result
When read, its content is indeterminate
0 : Without sample and hold
1 : With sample and hold
Set to 0
00C1h-00C0h
Address
After Reset
Function
00h
After Reset
Function
00h
Indeterminate
After Reset
19. A/D Converter
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
—
RO
RO
—
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