R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 170
![IC R8C/25 MCU FLASH 52LQFP](/photos/12/37/123739/r5f21257snfp_u0_sml.jpg)
R5F21257SNFP#U0
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
-
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R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 14.13
Timer RB Control Register
Timer RB One-Shot Control Register
b7 b6 b5 b4 b3 b2
NOTES:
b7 b6 b5 b4 b3 b2
NOTES:
1.
2.
3. Indicates that count operation is in progress in timer mode or programmable w aveform mode. In programmable one-
1.
2.
Refer to 14.2.5 Notes on Tim er RB.
When the TSTOP bit is set to 1, registers TRBPRE, TRBSC, TRBPR, and bits TSTART and TCSTF, and the TOSSTF bit
in the TRBOCR register are set to values after a reset.
shot generation mode or programmable w ait one-shot generation mode, indicates that a one-shot pulse trigger has
been acknow ledged.
When 1 is set to the TSTOP bit in the TRBCR register, the TOSSTF bit is set to 0.
This register is enabled w hen bits TMOD1 to TMOD0 in the TRBMR register is set to 10b (programmable one-shot
generation mode) or 11b (programmable w ait one-shot generation mode).
Feb 29, 2008
Registers TRBCR and TRBOCR
b1 b0
b1 b0
Bit Symbol
Bit Symbol
TRBOCR
TSTART
TOSSTF
(b7-b3)
(b7-b3)
Symbol
TRBCR
TSTOP
Symbol
TOSST
TOSSP
TCSTF
Page 151 of 485
—
—
Timer RB count start bit
Timer RB count status flag
Timer RB count forcible stop
bit
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
Timer RB one-shot start bit
Timer RB one-shot stop bit
Timer RB one-shot status
flag
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
(1, 2)
(1)
(2)
Address
Bit Name
Address
Bit Name
0108h
0109h
(1)
(1)
0 : Count stops
1 : Count starts
0 : Count stops
1 : During count
When this bit is set to 1, the count is forcibly
stopped. When read, its content is 0.
When this bit is set to 1, one-shot trigger
generated. When read, its content is 0.
When this bit is set to 1, counting of one-shot
pulses (including programmable w ait one-shot
pulses) stops. When read, its content is 0.
0 : One-shot stopped
1 : One-shot operating (Including w ait period)
(3)
After Reset
After Reset
Function
Function
00h
00h
14. Timers
RW
RW
RW
RW
RW
RW
RO
RO
—
—
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