R5F21238JFP#U0 Renesas Electronics America, R5F21238JFP#U0 Datasheet - Page 504
![IC R8C/23 MCU FLASH 64K 48LQFP](/photos/28/61/286102/48-lqfp__plqp0048kb-a_sml.jpg)
R5F21238JFP#U0
Manufacturer Part Number
R5F21238JFP#U0
Description
IC R8C/23 MCU FLASH 64K 48LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/23r
Datasheet
1.R5F21237DFPU0.pdf
(551 pages)
Specifications of R5F21238JFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
CAN, I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, Voltage Detect, WDT
Number Of I /o
41
Program Memory Size
64KB (64K x 8)
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
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
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21238JFP#U0R5F21238JFP#U1
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
R5F21238JFP#U0R5F21238JFP#V0
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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- Download datasheet (6Mb)
R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
22.3.4
22.3.4.1
22.3.4.2
Timer RE has the TSTART bit for instructing count start or stop, and the TCSTF bit which indicates count start
or stop. The TSTART and TCSTF bits are in the TRECR1 register.
Timer RE starts counting when setting the TSTART bit to 1 (count starts) and the TCSTF bit is set to 1 (count
starts). It takes the time for up to 2 cycles of the count source until the TCSTF bit is set to 1 after setting the
TSTART bit to 1. During this time, do not access registers associated with Timer RE
bit.
Also, timer RE stops counting when setting the TSTART bit to 0 (count stops) and the TCSTF bit is set to 0
(count stops). It takes the time for up to 2 cycles of the count source until the TCSTF bit is set to 0 after setting
the TSTART bit to 0. During this time, do not access registers associated with timer RE other than the TCSTF
bit.
NOTE:
Write to the following registers or bits while timer RE stops.
The state while Timer RE stops is indicated as the state where the TSTART and TCSTF bits in the TRECR1
register are set to 0 (timer RE stops).
Also, set all above-mentioned registers and bits (immediately before timer RE count starts) before setting the
TRECR2 register.
1. Registers associated with Timer RE: TRESEC, TREMIN, TRECR1, TRECR2, TRECSR
•
•
•
TRESEC and TRECR2 registers
The INT bit in TRECR1 register
RCS0 to RCS2 bits in TRECSR register
Notes on Timer RE
Starting and Stopping Count
Register Setting
Page 482 of 501
(1)
other than the TCSTF
22. Usage Notes
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