R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 184

• 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

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)