R5F21236JFP#U0 Renesas Electronics America, R5F21236JFP#U0 Datasheet - Page 496
![IC R8C/23 MCU FLASH 48LQFP](/photos/28/61/286102/48-lqfp__plqp0048kb-a_sml.jpg)
R5F21236JFP#U0
Manufacturer Part Number
R5F21236JFP#U0
Description
IC R8C/23 MCU FLASH 48LQFP
Manufacturer
Renesas Electronics America
Series
M16C™ M16C/R8C/Tiny/23r
Datasheet
1.R5F21237DFPU0.pdf
(551 pages)
Specifications of R5F21236JFP#U0
Core Processor
R8C
Core Size
16-Bit
Speed
20MHz
Connectivity
CAN, I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, Voltage Detect, WDT
Number Of I /o
41
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K 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:
R5F21236JFP#U0R5F21236JFP
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
R5F21236JFP#U0R5F21236JFP#U1
Manufacturer:
Renesas Electronics America
Quantity:
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Part Number:
R5F21236JFP#U0R5F21236JFP#U1
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
Figure 22.3
22.3.2.3
The following two workarounds should be performed in programmable one-shot generation mode.
•
(3) To stop the timer counting in the primary period, use the TSTOP bit in the TRBCR register. In this case,
(1) To write to registers TRBPRE and TRBPR during count operation (TCSTF bit is set to 1), note the
•
•
(2) Do not set both the TRBPRE and TRBPR registers to 00h.
Workaround example (b):
As shown in Figure 22.3 detect the start of the primary period by the TRBO pin output level and write to
registers TRBSC and TRBPR. These write operations must be completed by the beginning of period A.
If the port register’s bit value is read after the port direction register’s bit corresponding to the TRBO pin is
set to 0 (input mode), the read value indicates the TRBO pin output value.
When the TRBPRE register is written continuously during count operation (TCSTF bit is set to 1), allow
three or more cycles of the count source for each write interval.
When the TRBPR register is written continuously during count operation (TCSTF bit is set to 1), allow
three or more cycles of the prescaler underflow for each write interval.
bit corresponding to the TRBO pin
registers TRBPRE and TRBPR are initialized and their values are set to the values after reset.
following points:
(when the bit in the port direction
Read value of the port register’s
Programmable one-shot generation mode
Workaround Example (b) When TRBO Pin Output Value is Read
TRBO pin output
register is set to 0)
is detected at the end of the
The TRBO output inversion
underflow signal
Page 474 of 501
Count source/
secondary period.
prescaler
(i)
(ii) (iii)
Upon detecting (i), set the secondary and
then the primary register immediately.
Primary period
Ensure sufficient time
Secondary period
Period A
22. Usage Notes
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