R5F21237DFP#U0 Renesas Electronics America, R5F21237DFP#U0 Datasheet - Page 172

• Manufacturer Part Number: R5F21237DFP#U0
• Description: IC R8C/23 MCU FLASH 48-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/23r

Specifications of R5F21237DFP#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: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.5K 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/23R0K521237S000BE - KIT DEV RSK R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
Figure 14.16
Timer RB Prescaler Register
Timer RB Secondary Register
Timer RB Primary Register
b7
NOTE:
b7
NOTES:
b7
NOTES:
1.
1.
2.
3.
4.
1.
2.
When the TSTOP bit in the TRBCR register is set to 1, the TRBPRE register is set to FFh.
Each value in the TRBPR register and TRBSC register is reloaded to the counter alternately and counted.
The count value can be read out by reading the TRBPR register even w hen the secondary period is being counted.
When the TSTOP bit in the TRBCR register is set to 1, the TRBSC register is set to FFh.
To w rite to the TRBSC register, perform the follow ing steps.
(1) Write the value to the TRBSC register.
(2) Write the value to the TRBPR register. (If the value does not change, w rite the same value second time.)
Each value in the TRBPR register and TRBSC register is reloaded to the counter alternately and counted.
When the TSTOP bit in the TRBCR register is set to 1, the TRBPR register is set to FFh.
Registers TRBPRE, TRBSC, and TRBPR
b0
b0
b0
Timer mode
Programmable w aveform
generation mode
Programmable one-shot
generation mode
Programmable w ait one-shot
generation mode
Timer mode
Programmable w aveform
generation mode
Programmable one-shot
generation mode
Programmable w ait one-shot
generation mode
Timer mode
Programmable w aveform
generation mode
Programmable one-shot
generation mode
Programmable w ait one-shot
generation mode
Page 150 of 501
(2)
(1)
TRBPRE
Symbol
Symbol
TRBSC
Symbol
TRBPR
Mode
Mode
Mode
(3,4)
Counts an internal count source or a timer RA
underflow
Disable
Counts a timer RB prescaler underflow
Disable
Counts a timer RB prescaler underflow
(one-shot w idth is counted)
Counts a timer RB prescaler underflow
Counts a timer RB prescaler underflow
Counts a timer RB prescaler underflow
(one-shot w idth is counted)
Counts a timer RB prescaler underflow
(w ait period w idth is counted)
Address
Address
Address
Function
Function
Function
010Ch
010Dh
010Eh
(1)
(1)
Setting Range
Setting Range
Setting Range
After Reset
After Reset
After Reset
00h to FFh
00h to FFh
00h to FFh
00h to FFh
00h to FFh
00h to FFh
00h to FFh
00h to FFh
00h to FFh
00h to FFh
00h to FFh
00h to FFh
FFh
FFh
FFh
14. Timers
WO
WO
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
—
—
(2)
(2)