R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 155

• Manufacturer Part Number: R5F21257SNFP#U0
• Description: IC R8C/25 MCU FLASH 52LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/25r

Specifications of R5F21257SNFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: 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): 2.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 52-LQFP
• For Use With: R0K521256S000BE - KIT EVAL STARTER FOR R8C/25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 14.3
Timer RA Register
Timer RA Mode Register
Timer RA Prescaler Register
b7
NOTE:
b7 b6 b5 b4
NOTE:
b7
NOTE:
1.
1.
1.
When the TSTOP bit in the TRACR register is set to 1, the TRA register is set to FFh.
When both the TSTART and TCSTF bits in the TRACR register are set to 0 (count stops), rew rite this register.
When the TSTOP bit in the TRACR register is set to 1, the TRAPRE register is set to FFh.
Feb 29, 2008
b3 b2
Registers TRAMR, TRAPRE, and TRA
b1 b0
b0
b0
All modes
Timer mode
Pulse output mode
Event counter mode
Pulse w idth
measurement mode
Pulse period
measurement mode
Bit Symbol
TCKCUT
TRAMR
TMOD0
TMOD1
TMOD2
Symbol
TCK0
TCK1
TCK2
(b3)
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(1)
TRAPRE
Symbol
Symbol
Mode
Mode
TRA
Timer RA operating mode
select bits
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
Timer RA count source
select bits
Timer RA count source
cutoff bit
Address
Bit Name
0102h
Counts on underflow of timer RA prescaler
register
Counts an internal count source
Counts an internal count source
Counts an external count source
Counts internal count source
b2 b1 b0
0 0 0 : Timer mode
0 0 1 : Pulse output mode
0 1 0 : Event counter mode
0 1 1 : Pulse w idth measurement mode
1 0 0 : Pulse period measurement mode
1 0 1 :
1 1 0 :
1 1 1 :
b6 b5 b4
0 0 0 : f1
0 0 1 : f8
0 1 0 : fOCO
0 1 1 : f2
1 0 0 : fC32
1 0 1 :
1 1 0 :
1 1 1 :
0 : Provides count source
1 : Cuts off count source
Address
Address
Function
Function
0104h
0103h
Do not set.
Do not set.
After Reset
Function
00h
Setting Range
Setting Range
After Reset
After Reset
00h to FFh
00h to FFh
00h to FFh
00h to FFh
00h to FFh
00h to FFh
FFh
FFh
(1)
(1)
14. Timers
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
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