R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 291

• 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 14.37
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