R5F21266SNFP#U0 Renesas Electronics America, R5F21266SNFP#U0 Datasheet - Page 196
![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
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Part Number
Manufacturer
Quantity
Price
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R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
14.2.5
14.2.5.1
The following workaround should be performed in timer mode.
To write to registers TRBPRE and TRBPR during count operation (TCSTF bit is set to 1), note the following
points:
• Timer RB stops counting after a reset. Set the values in the timer RB and timer RB prescalers before the
• Even if the prescaler and timer RB is read out in 16-bit units, these registers are read 1 byte at a time by the
• In programmable one-shot generation mode and programmable wait one-shot generation mode, when
• The TCSTF bit remains 0 (count stops) for 1 to 2 cycles of the count source after setting the TSTART bit to
• If the TSTOP bit in the TRBCR register is set to 1 during timer operation, timer RB stops immediately.
• If 1 is written to the TOSST or TOSSP bit in the TRBOCR register, the value of the TOSSTF bit changes
• When the TRBPRE register is written continuously, allow three or more cycles of the count source for each
• When the TRBPR register is written continuously, allow three or more cycles of the prescaler underflow
Sep 26, 2008
count starts.
MCU. Consequently, the timer value may be updated during the period when these two registers are being
read.
setting the TSTART bit in the TRBCR register to 0, 0 (stops counting) or setting the TOSSP bit in the
TRBOCR register to 1 (stops one-shot), the timer reloads the value of reload register and stops. Therefore,
in programmable one-shot generation mode and programmable wait one-shot generation mode, read the
timer count value before the timer stops.
1 (count starts) while the count is stopped.
During this time, do not access registers associated with timer RB
starts counting at the first valid edge of the count source after the TCSTF bit is set to 1 (during count).
The TCSTF bit remains 1 for 1 to 2 cycles of the count source after setting the TSTART bit to 0 (count
stops) while the count is in progress. Timer RB counting is stopped when the TCSTF bit is set to 0.
During this time, do not access registers associated with timer RB
NOTE:
after one or two cycles of the count source have elapsed. If the TOSSP bit is written to 1 during the period
between when the TOSST bit is written to 1 and when the TOSSTF bit is set to 1, the TOSSTF bit may be
set to either 0 or 1 depending on the content state. Likewise, if the TOSST bit is written to 1 during the
period between when the TOSSP bit is written to 1 and when the TOSSTF bit is set to 0, the TOSSTF bit
may be set to either 0 or 1.
write interval.
for each write interval.
Notes on Timer RB
1. Registers associated with timer RB: TRBCR, TRBOCR, TRBIOC, TRBMR, TRBPRE, TRBSC, and
Timer mode
Page 177 of 453
TRBPR.
(1)
(1)
other than the TCSTF bit.
other than the TCSTF bit. Timer RB
14. Timers
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