R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 93
![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
- Current page: 93 of 551
- Download datasheet (6Mb)
R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
10. Clock Generation Circuit
The clock generation circuit has:
Table 10.1 lists Specifications of Clock Generation Circuit. Figure 10.1 shows a Clock Generation Circuit. Figures
10.2 to 10.8 show clock-associated registers.
Table 10.1
NOTES:
Use of Clock
Clock Frequency 0 to 20 MHz
Connectable
Oscillator
Oscillator
Connect Pins
Oscillation Stop,
Restart Function
Oscillator Status
After Reset
Others
• XIN clock oscillation circuit
• Low-speed on-chip oscillator
• High-speed on-chip oscillator
1. These pins can be used as P4_6 and P4_7 when using the on-chip oscillator clock as the CPU
2. Set the CM05 bit in the CM0 register to 1 (main clock stops) and the CM13 bit in the CM1 register to
3. The clock frequency is automatically set to up to 20 MHz by a driver when using the high-speed on-
clock while the XIN clock oscillation circuit is not used.
1 (XIN-XOUT pin) when the external clock is input.
chip oscillator as the CPU clock source.
Item
Specifications of Clock Generation Circuit
• CPU clock source
• Peripheral
• Ceramic
• Crystal oscillator
XIN, XOUT
Usable
Stop
Externally
generated clock
can be input
Oscillation Circuit
function clock
source
resonator
Page 71 of 501
XIN Clock
(1)
(2)
• CPU clock source
• Peripheral function clock
• CPU and peripheral function
Approx. 40 MHz
−
−
Usable
Stop
−
High-Speed On-Chip Oscillator
source
clock sources when XIN clock
stops oscillating
(1)
(3)
On-Chip Oscillator
• CPU clock source
• Peripheral function clock
• CPU and peripheral function
Approx. 125 kHz
−
−
Usable
Oscillate
−
Low-Speed On-Chip Oscillator
source
clock sources when XIN clock
stops oscillating
(1)
10. Clock Generation Circuit
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