R5F21266SNFP#U0 Renesas Electronics America, R5F21266SNFP#U0 Datasheet - Page 185
![IC R8C/26 MCU FLASH 32LQFP](/photos/12/37/123707/r5f21266snfp_u0_sml.jpg)
R5F21266SNFP#U0
Manufacturer Part Number
R5F21266SNFP#U0
Description
IC R8C/26 MCU FLASH 32LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/26r
Datasheet
1.R5F21272SDFPU0.pdf
(487 pages)
Specifications of R5F21266SNFP#U0
Core Size
16/32-Bit
Program Memory Size
32KB (32K x 8)
Core Processor
R8C
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
LED, POR, Voltage Detect, WDT
Number Of I /o
25
Program Memory Type
FLASH
Ram Size
1.5K 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
No. Of I/o's
25
Ram Memory Size
1.5KB
Cpu Speed
20MHz
No. Of Timers
4
Digital Ic Case Style
LQFP
Supply Voltage Range
2.2V To 5.5V
Embedded Interface Type
I2C, UART
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
R0K521276S000BE - KIT DEV RSK-R8C/26-29R0E521000EPB00 - PROBE EMULATOR FOR PC7501
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
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Part Number
Manufacturer
Quantity
Price
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R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
14.2.2
Table 14.8
NOTES:
Count sources
Count operations
Width and period of
output waveform
Count start condition
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, the TRBPR register may be read.
2. The set values are reflected in the waveform output beginning with the following primary period after
3. The value written to the TOCNT bit is enabled by the following.
In programmable waveform generation mode, the signal output from the TRBO pin is inverted each time the
counter underflows, while the values in registers TRBPR and TRBSC are counted alternately (refer to Table
14.8 Specifications of Programmable Waveform Generation Mode). Counting starts by counting the setting
value in the TRBPR register. The TRBOCR register is unused in this mode.
Figure 14.18 shows the TRBIOC Register in Programmable Waveform Generation Mode. Figure 14.19 shows
an Operating Example of Timer RB in Programmable Waveform Generation Mode.
writing to the TRBPR register.
• When counting starts.
• When a timer RB interrupt request is generated.
Sep 26, 2008
The contents after the TOCNT bit is changed are reflected from the output of the following
primary period.
Programmable Waveform Generation Mode
Item
Specifications of Programmable Waveform Generation Mode
Page 166 of 453
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
1 (count start) is written to the TSTART bit in the TRBCR register.
• 0 (count stop) is written to the TSTART bit in the TRBCR register.
• 1 (count forcibly stop) is written to the TSTOP bit in the TRBCR register.
In half a cycle of the count source, after timer RB underflows during the
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 registers TRBPR and TRBPRE.
• 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
• TRBO pin select 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.
fi: Count source frequency
n: Value set in TRBPRE register, m: Value set in TRBPR register
p: Value set in TRBSC register
The TOPL bit in the TRBIOC register selects the output level during primary
and secondary periods.
Timer RB pulse output or P3_1 (P1_3) latch output is selected by the
TOCNT bit in the TRBIOC register.
P3_1 or P1_3 is selected by the TRBOSEL bit in the PINSR2 register.
Specification
(3)
(2)
14. Timers
(1)
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