R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 291
![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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R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
Table 14.37
Count Source
Count Operation
Count Period
Count Start Condition
Count Stop Condition
Interrupt Request Generation
Timing
TREO Pin Function
Read from Timer
Write to Timer
Select Functions
Item
Output Compare Mode Specifications
Page 269 of 501
f4, f8, f32
• Increment
• When the 8-bit counter content matches with the TREMIN register
• When RCS2 = 0 (4-bit counter is not used)
• When RCS2 = 1 (4-bit counter is used)
fi: Frequency of count source
n: Setting value of TREMIN register
Write 1 (count starts) to the TSTART bit in the TRECR1 register
Write 0 (count stops) to the TSTART bit in the TRECR1 register
When the 8-bit counter content matches with the TREMIN register
content
Select any one of the followings:
• Programmable I/O ports
• Output any one of f2, f4 and f8
• Compare output
When reading the TRESEC register, the 8-bit counter value can be
read.
When reading the TREMIN register, the compare value can be read.
Writing to the TRESEC register is disabled.
When the TSTART and TCSTF bits in the TRECR1 register are set to
0 (timer stops), writing to the TREMIN register is enabled.
• Select use of 4-bit counter
• Compare output function
content, the value returns to 00h and count continues.
The count value is held while count stops.
Every time the 8-bit counter value matches with the TREMIN register
value, TREO output polarity is reversed. The TREO pin outputs “L”
after reset is deasserted and the Timer RE reset by the TRERST bit
in the TRECR1 register. Output level is held by setting the TSTART
bit to 0 (count stops).
1/fi x 2 x (n + 1)
1/fi x 32 x (n + 1)
Specification
14. Timers
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