R5F21274SNFP#U0 Renesas Electronics America, R5F21274SNFP#U0 Datasheet - Page 169

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
14.1.3
Table 14.4
NOTE:
Count source
Count operations
Divide ratio
Count start condition
Count stop conditions
Interrupt request
generation timing
INT1/TRAIO pin function Count source input (INT1 interrupt input)
TRAO pin function
Read from timer
Write to timer
Select functions
1. The level of the output pulse becomes the level when the pulse output starts when the TRAMR
In event counter mode, external signal inputs to the INT1/TRAIO pin are counted (refer to Table 14.4
Specifications of Event Counter Mode).
Figure 14.7 shows the TRAIOC Register in Event Counter Mode.
register is written to.
Sep 26, 2008
Event Counter Mode
Item
Specifications of Event Counter Mode
Page 150 of 453
External signal which is input to TRAIO pin (active edge selectable by a
program)
• Decrement
• When the timer underflows, the contents of the reload register are reloaded
1/(n+1)(m+1)
1 (count starts) is written to the TSTART bit in the TRACR register.
• 0 (count stops) is written to the TSTART bit in the TRACR register.
• 1 (count forcibly stops) is written to the TSTOP bit in the TRACR register.
• When timer RA underflows [timer RA interrupt].
Programmable I/O port or pulse output
The count value can be read by reading registers TRA and TRAPRE.
• When registers TRAPRE and TRA are written while the count is stopped,
• When registers TRAPRE and TRA are written during the count, values are
• INT1 input polarity switch function
• Count source input pin select function
• Pulse output function
• Digital filter function
and the count is continued.
values are written to both the reload register and counter.
written to the reload register and counter (refer to 14.1.1.1 Timer Write
Control during Count Operation).
n: setting value of TRAPRE register, m: setting value of TRA register
The TEDGSEL bit in the TRAIOC register selects the active edge of the
count source.
P1_7 or P1_5 is selected by the TIOSEL bit in the TRAIOC register.
Pulses of inverted polarity can be output from the TRAO pin each time the
timer underflows (selectable by the TOENA bit in the TRAIOC register).
Bits TIPF0 and TIPF1 in the TRAIOC register enable or disable the digital
filter and select the sampling frequency.
Specification
(1)
14. Timers
(1)

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