R5F21272SDFP#U0 Renesas Electronics America, R5F21272SDFP#U0 Datasheet - Page 162

IC R8C/27 MCU FLASH 32LQFP

R5F21272SDFP#U0

Manufacturer Part Number
R5F21272SDFP#U0
Description
IC R8C/27 MCU FLASH 32LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/27r
Datasheet

Specifications of R5F21272SDFP#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
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°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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Manufacturer:
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Manufacturer:
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R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
14.1
Figure 14.1
INT1/TRAIO (P1_7) pin
INT1/TRAIO (P1_5) pin
Timer RA is an 8-bit timer with an 8-bit prescaler.
The prescaler and timer each consist of a reload register and counter. The reload register and counter are allocated
at the same address, and can be accessed when accessing registers TRAPRE and TRA (refer to Tables 14.2 to 14.6
the Specifications of Each Mode).
The count source for timer RA is the operating clock that regulates the timing of timer operations such as counting
and reloading.
Figure 14.1 shows a Block Diagram of Timer RA. Figures 14.2 and 14.3 show the registers associated with timer
RA.
Timer RA contains the following five operating modes:
• Timer mode:
• Pulse output mode:
• Event counter mode:
• Pulse width measurement mode:
• Pulse period measurement mode:
TCK2 to TCK0 bit
fC32
fOCO
Timer RA
Sep 26, 2008
f1
f8
f2
(1)
= 000b
= 001b
= 010b
= 011b
= 100b
TRAO pin
TIOSEL = 0
TIOSEL = 1
Block Diagram of Timer RA
f32
f1
f8
TIPF1 to TIPF0 bits
= 01b
= 10b
= 11b
NOTE:
TIPF1 to TIPF0 bits
= other than
000b
1. For J, K version, fC32 cannot be selected.
= 00b
TOENA bit
Page 143 of 453
Digital
filter
TMOD2 to TMOD0
TMOD2 to TMOD0
switching
= other than 010b
Polarity
= 010b
The timer counts the internal count source.
The timer counts the internal count source and outputs pulses which
invert the polarity by underflow of the timer.
The timer counts external pulses.
The timer measures the pulse width of an external pulse.
The timer measures the pulse period of an external pulse.
TMOD2 to TMOD0 = 001b
TOPCR bit
TCKCUT
TMOD2 to TMOD0
bit
= 011b or 100b
TCSTF, TSTOP: TRACR register
TEDGSEL, TOPCR, TOENA, TIOSEL, TIPF1, TIPF0: TRAIOC register
TMOD2 to TMOD0, TCK2 to TCK0, TCKCUT: TRAMR register
TCSTF
bit
TEDGSEL = 1
TEDGSEL = 0
Count control
TRAPRE register
register
circle
Reload
(prescaler)
Counter
Q
Q
Data bus
Measurement completion
flip-flop
Toggle
CLR
register
signal
Reload
TRA register
CK
Counter
(timer)
Write to TRAMR register
Write 1 to TSTOP bit
Underflow signal
Timer RA interrupt
14. Timers

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