R5F21274SNFP#U0 Renesas Electronics America, R5F21274SNFP#U0 Datasheet - Page 178

IC R8C/27 MCU FLASH 32LQFP

R5F21274SNFP#U0

Manufacturer Part Number
R5F21274SNFP#U0
Description
IC R8C/27 MCU FLASH 32LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/27r
Datasheet

Specifications of R5F21274SNFP#U0

Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
LED, POR, Voltage Detect, WDT
Number Of I /o
25
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1K 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
32-LQFP
For Use With
R0K521276S000BE - KIT DEV RSK-R8C/26-29R0E521000EPB00 - PROBE EMULATOR FOR PC7501
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-

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R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
14.2
Figure 14.12
TRBO (P3_1) pin
TRBO (P1_3) pin
Timer RB is an 8-bit timer with an 8-bit prescaler.
The prescaler and timer each consist of a reload register and counter (refer to Tables 14.7 to 14.10 the
Specifications of Each Mode).
Timer RB has timer RB primary and timer RB secondary as reload registers.
The count source for timer RB is the operating clock that regulates the timing of timer operations such as counting
and reloading.
Figure 14.12 shows a Block Diagram of Timer RB. Figures 14.13 to 14.15 show the registers associated with timer
RB.
Timer RB has four operation modes listed as follows:
Timer RA underflow
• Timer mode:
• Programmable waveform generation mode:
• Programmable one-shot generation mode:
• Programmable wait one-shot generation mode:
INT0 pin
TSTART, TCSTF: Bits in TRBCR register
TOSSTF: Bit in TRBOCR register
TOPL, TOCNT, INOSTG, INOSEG: Bits in TRBIOC register
TMOD1 to TMOD0, TCK1 to TCK0, TCKCUT: Bits in TRBMR register
TRBOSEL: Bit in PINSR2 register
TCK1 to TCK0 bits
Timer RB
Sep 26, 2008
f1
f2
f8
TRBOSEL = 0
TRBOSEL = 1
Block Diagram of Timer RB
= 00b
= 01b
= 10b
= 11b
TMOD1 to TMOD0 bits
= 01b
TCKCUT bit
Page 159 of 453
,
10b, 11b
Digital filter
TOCNT = 1
TOCNT = 0
P3_1 bit in P3 register
edge or both edges
TRBPRE register
selected to be one
register
Reload
Input polarity
INT0EN bit
INT0PL bit
TSTART bit
(prescaler)
Counter
The timer counts an internal count source (peripheral
function clock or timer RA underflows).
The timer outputs pulses of a given width successively.
The timer outputs a one-shot pulse.
The timer outputs a delayed one-shot pulse.
TMOD1 to TMOD0 bits
= 10b or 11b
Data bus
TOPL = 1
TOPL = 0
register
Reload
INOSEG bit
TRBSC
register
Polarity
Counter (timer RB)
select
Q
Q
(Timer)
TOSSTF bit
register
Reload
Toggle
flip-flop
CLR
INOSTG bit
TRBPR
register
CK
TCSTF bit
TMOD1 to TMOD0 bits
= 01b
Timer RB interrupt
INT0 interrupt
,
10b, 11b
14. Timers

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