R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 282

• Manufacturer Part Number: R5F21346CNFP#U0
• Description: MCU 1KB FLASH 32K ROM 48-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/34Cr

Specifications of R5F21346CNFP#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: 43
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/34C Group
REJ09B0586-0100 Rev.1.00 Jan 13, 2010
Page 249 of 723
18.6
Table 18.5
Note:
Count sources
Count operations
Wait time
One-shot pulse output time
Count start conditions
Count stop conditions
Interrupt request generation
timing
TRBO pin function
INT0 pin functions
Read from timer
Write to timer
Selectable functions
In programmable wait one-shot generation mode, a one-shot pulse is output from the TRBO pin by a program or an
external trigger input (input to the INT0 pin) (refer to Table 18.5 Programmable Wait One-Shot Generation Mode
Specifications). When a trigger is generated from that point, the timer outputs a pulse only once for a given length
of time equal to the setting value in the TRBSC register after waiting for a given length of time equal to the setting
value in the TRBPR register.
Figure 18.5 shows an Operating Example of Programmable Wait One-Shot Generation Mode.
1. The set value is reflected at the following one-shot pulse after writing to registers TRBSC and TRBPR.
Programmable Wait One-Shot Generation Mode
Item
Programmable Wait One-Shot Generation Mode Specifications
f1, f2, f8, timer RA underflow
• Decrement the timer RB primary setting value.
• When a count of the timer RB primary underflows, the timer reloads the contents of
• When a count of the timer RB secondary underflows, the timer reloads the contents
• When the count stops, the timer reloads the contents of the reload register before it
(n+1)(m+1)/fi
fi: Count source frequency
n: Value set in the TRBPRE register, m Value set in the TRBPR register
(n+1)(p+1)/fi
fi: Count source frequency
n: Value set in the TRBPRE register, p: Value set in the TRBSC register
• The TSTART bit in the TRBCR register is set to 1 (count starts) and the next trigger
• Set the TOSST bit in the TRBOCR register to 1 (one-shot starts).
• Input trigger to the INT0 pin
• When reloading completes after timer RB underflows during secondary period.
• When the TOSSP bit in the TRBOCR register is set to 1 (one-shot stops).
• When the TSTART bit in the TRBCR register is set to 0 (starts counting).
• When the TSTOP bit in the TRBCR register is set to 1 (forcibly stops counting).
In half a cycle of the count source after timer RB underflows during secondary period
(complete at the same time as waveform output from the TRBO pin) [timer RB
interrupt].
Pulse output
• When the INOSTG bit in the TRBIOC register is set to 0 (INT0 one-shot trigger
• When the INOSTG bit in the TRBIOC register is set to 1 (INT0 one-shot trigger
The count value can be read out by reading registers TRBPR and TRBPRE.
• When registers TRBPRE, TRBSC, and TRBPR are written while the count stops,
• When registers TRBPRE, TRBSC, and TRBPR are written to during count
• Output level select function
• One-shot trigger select function
timer RB secondary before the count continues.
of timer RB primary before the count completes and the TOSSTF bit is set to 0
(one-shot stops).
stops.
is generated.
disabled): programmable I/O port or INT0 interrupt input
enabled): external trigger (INT0 interrupt input)
values are written to both the reload register and counter.
operation, values are written to the reload registers only.
The output level of the one-shot pulse waveform is selected by the TOPL bit in the
TRBIOC register.
Refer to 18.5.3 One-Shot Trigger Selection.
Specification
(1)
18. Timer RB