R5F212A8SNFA#U0 Renesas Electronics America, R5F212A8SNFA#U0 Datasheet - Page 192

• Manufacturer Part Number: R5F212A8SNFA#U0
• Description: IC R8C/2A MCU FLASH 64K 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/2Ar

Specifications of R5F212A8SNFA#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, PWM, Voltage Detect, WDT
• Number Of I /o: 55
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 3K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 64-LQFP
• For Use With: R0K5212D8S001BE - KIT STARTER FOR R8C/2DR0K5212D8S000BE - KIT DEV FOR R8C/2D
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/2A Group, R8C/2B Group
Rev.2.00
REJ09B0324-0200
14.1.5
Table 14.7
NOTE:
Count sources
Count operations
Count start condition
Count stop conditions
Interrupt request
generation timing
INT1/TRAIO pin function Measured pulse input
TRAO pin function
Read from timer
Write to timer
Select functions
1. Input a pulse with a period longer than twice the timer RA prescaler period. Input a pulse with a
In pulse period measurement mode, the pulse period of an external signal input to the INT1/TRAIO pin is
measured (refer to Table 14.7 Pulse Period Measurement Mode Specifications).
Figure 14.10 the shows TRAIOC Register in Pulse Period Measurement Mode and Figure 14.11 shows an
Operating Example of Pulse Period Measurement Mode.
longer “H” and “L” width than the timer RA prescaler period. If a pulse with a shorter period is input to
the TRAIO pin, the input may be ignored.
Nov 26, 2007
Item
Pulse Period Measurement Mode
Pulse Period Measurement Mode Specifications
Page 170 of 580
f1, f2, f8, fOCO, fC32
• Decrement
• After the active edge of the measured pulse is input, the contents of the read-
1 (count starts) is written to the TSTART bit in the TRACR register.
• 0 (count stops) is written to TSTART bit in the TRACR register.
• 1 (count forcibly stops) is written to the TSTOP bit in the TRACR register.
• When timer RA underflows or reloads [timer RA interrupt].
• Rising or falling of the TRAIO input (end of measurement period) [timer RA
Programmable I/O port
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
• Measurement period select
• Measured pulse input pin select function
• Digital filter function
out buffer are retained at the first underflow of timer RA prescaler. Then timer
RA reloads the contents in the reload register at the second underflow of
timer RA prescaler and continues counting.
interrupt]
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).
The TEDGSEL bit in the TRAIOC register selects the measurement period of
the input pulse.
P1_7 or P1_5 is selected by the TIOSEL bit in the TRAIOC register.
Bits TIPF0 and TIPF1 in the TRAIOC register enable or disable the digital
filter and select the sampling frequency.
(1)
(INT1 interrupt input)
Specification
14. Timers