R5F21236KFP#U0 Renesas Electronics America, R5F21236KFP#U0 Datasheet - Page 176

• Manufacturer Part Number: R5F21236KFP#U0
• Description: IC R8C/23 MCU FLASH 48LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/23r

Specifications of R5F21236KFP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: CAN, I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, Voltage Detect, WDT
• Number Of I /o: 41
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 48-LQFP
• For Use With: RCDK8C - KIT DEV EVAL FOR CAN R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
14.2.2
Table 14.8
NOTES:
Count Sources
Count Operations
Width and Period of
Output Waveform
Count Start Condition Write 1 (count start) to the TSTART bit in the TRBCR register
Count Stop
Conditions
Interrupt Request
Generation Timing
TRBO Pin Function
INT0 Pin Function
Read from Timer
Write to Timer
Select Functions
1. Even when counting the secondary period, read out the TRBPR register.
2. The set values are reflected to the waveform output beginning with the following primary period after
3. The value written to the TOCNT bit is enabled by the following.
Programmable waveform generation mode is mode to invert the signal output from the TRBO pin each time the
counter underflows, while the values in the TRBPR and TRBSC registers are counted alternately (see Table
14.8 Programmable Waveform Generation Mode Specifications). A counting starts by counting the setting
value in the TRBPR register. The TRBOCR register is unused in this mode.
Figure 14.19 shows the TRBIOC Register in Programmable Waveform Generation Mode. Figure 14.20 shows
the Operation Example of Timer RB in Programmable Waveform Generation Mode.
writing to the TRBPR register.
•
•
When count starts.
When the timer RB interrupt request is generated.
The contents after the TOCNT bit is changed are reflected from the output of the following
primary period.
Item
Programmable Waveform Generation Mode
Programmable Waveform Generation Mode Specifications
Page 154 of 501
f1, f2, f8, timer RA underflow
• Decrement
• When the timer underflows, it reloads the contents of the primary reload and
Primary period: (n+1)(m+1)/fi
Secondary period: (n+1)(p+1)/fi
Period: (n+1){(m+1)+(p+1)}/fi
fi: Count source frequency
n: Setting value in TRBPRE register
m: Setting value in TRBPR register
p: Setting value in TRBSC register
• Write 0 (count stop) to the TSTART bit in the TRBCR register
• Write 1 (count forcibly stop) to the TSTOP bit in the TRBCR register
In half of count source, after timer RB underflows during secondary period (at the
same time as the TRBO output change) [timer RB interrupt]
Programmable output port or pulse output
Programmable I/O port or INT0 interrupt input
The count value can be read out by reading the TRBPR and TRBPRE registers
• When registers TRBPRE, TRBSC, and TRBPR are written while the count is
• When registers TRBPRE, TRBSC, and TRBPR are written to during count
• Output level select function
• TRBO pin output switch function
secondary reload registers alternately before the count continues.
stopped, values are written to both the reload register and counter.
operation, values are written to the reload registers only.
The TOPL bit can select the output level during primary and secondary periods.
Timer RB pulse output or P3_1 latch output is selected by the TOCNT bit in the
TRBIOC register.
(3)
Specification
(2)
14. Timers
(1)