R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 184
![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 14.10
NOTES:
Count Sources
Count Operations
Wait Time
One-Shot Pulse Output Time (n+1)(p+1)/fi
Count Start Conditions
Count Stop Conditions
Interrupt Request
Generation Timing
TRBO Pin Function
INT0 Pin Functions
Read from Timer
Write to Timer
Select Functions
1. The set value is reflected at the following one-shot pulse after writing to registers TRBSC and
2. Do not set both the TRBPRE and TRBPR registers to 00h.
TRBPR.
Item
Programmable Wait One-Shot Generation Mode Specifications
Page 162 of 501
f1, f2, f8, timer RA underflow
• Decrement the setting value in timer RB primary
• When a count of timer RB primary underflows, the timer reloads the
• When a count of timer RB secondary underflows, the timer reloads the
• When a count stops, the timer reloads the contents of the reload register
(n+1)(m+1)/fi
fi: Count source frequency
n: Setting value in the TRBPRE register, m: Setting value in the TRBPR register
fi: Count source frequency
n: Setting value in the TRBPRE register, p: Setting value in the TRBSC register
• The TSTART bit in the TRBCR register is set to 1 (count starts) and the
• Set the TOSST bit in the TRBOCR register to 1 (one-shot starts)
• Input trigger to the INT0 pin
• When reloading completes after timer RB underflows during secondary period
• When the TOSSP bit in the TRBOCR register is set to 1 (one-shot stops)
• When the TSTART bit in the TRBCR register is set to 0 (starts counting)
• When the TSTOP bit in the TRBCR register is set to 1 (forcibly stops
In half cycles of the count source after timer RB underflows during
secondary period (complete at the same time as waveform output from the
TRBO pin) [timer RB interrupt]
Pulse output
• When the INOSTG bit in the TRBIOC register is set to 0 (INT0 one-shot
• When the INOSTG bit in the TRBIOC register is set to 1 (INT0 one-shot
The count value can be read out by reading the TRBPR and TRBPRE
registers.
• When registers TRBPRE, TRBSC, and TRBPR are written while the
• When registers TRBPRE, TRBSC, and TRBPR are written to during
• Output level select function
• One-shot trigger select function
contents of the timer RB secondary before the count continues.
contents of the timer RB primary before the count completes and the
TOSSTF bit is set to 0 (one-shot stops).
before it stops.
next trigger is generated.
counting)
trigger disabled), programmable I/O port or INT0 interrupt input
trigger enabled), external trigger (INT0 interrupt input)
count stops, values are written to both the reload register and counter.
count operation, values are written to the reload registers only.
The TOPL bit in the TRBIO register can select the output level of the
one-shot pulse waveform.
Refer to 14.2.3.1 One-Shot Trigger Selection.
Specification
(1)
14. Timers
(2)
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