R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 140
![IC R8C MCU FLASH 4K 20SSOP](/photos/12/35/123585/r5f211b1sp_u0_sml.jpg)
R5F211B1SP#U0
Manufacturer Part Number
R5F211B1SP#U0
Description
IC R8C MCU FLASH 4K 20SSOP
Manufacturer
Renesas Electronics America
Series
M16C™ M16C/R8C/Tiny/1Br
Datasheets
1.R5F211A2SPU0.pdf
(51 pages)
2.R5F211A2SPU0.pdf
(300 pages)
3.R5F211A2SPU0.pdf
(341 pages)
Specifications of R5F211B1SP#U0
Core Processor
R8C
Core Size
16-Bit
Speed
20MHz
Connectivity
I²C, SIO, SSU, UART/USART
Peripherals
LED, POR, Voltage Detect, WDT
Number Of I /o
13
Program Memory Size
4KB (4K x 8)
Program Memory Type
FLASH
Ram Size
384 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
20-SSOP
For Use With
R0K5211B4S001BE - KIT STARTER FOR R8C/18191A1BR0K5211B4S000BE - KIT DEV EVALUATION R8C/1BR0E521174CPE10 - EMULATOR COMPACT R8C/18/19/1
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Manufacturer
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Price
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- Download datasheet (4Mb)
R8C/1A Group, R8C/1B Group
Rev.1.30
REJ09B0252-0130
14.1.6
• Timer X stops counting after a reset. Set the values in the timer and prescaler before the count starts.
• Even if the prescaler and timer are read out in 16-bit units, these registers are read 1 byte at a time by the
• Do not rewrite bits TXMOD0 to TXMOD1, and bits TXMOD2 and TXS simultaneously.
• In pulse period measurement mode, bits TXEDG and TXUND in the TXMR register can be set to 0 by
• When changing to pulse period measurement mode from another mode, the contents of bits TXEDG and
• The TXEDG bit may be set to 1 by the prescaler X underflow generated after the count starts.
• When using the pulse period measurement mode, leave two or more periods of the prescaler X immediately
• The TXS bit in the TXMR register has a function to instruct timer X to start or stop counting and a function
Dec 08, 2006
MCU. Consequently, the timer value may be updated during the period when these two registers are being
read.
writing 0 to these bits by a program. However, these bits remain unchanged if 1 is written. When using the
READ-MODIFY-WRITE instruction for the TXMR register, the TXEDG or TXUND bit may be set to 0
although these bits are set to 1 while the instruction is being executed. In this case, write 1 to the TXEDG or
TXUND bit which is not supposed to be set to 0 with the MOV instruction.
TXUND are undefined. Write 0 to bits TXEDG and TXUND before the count starts.
after the count starts, then set the TXEDG bit to 0.
to indicate that the count has started or stopped.
0 (count stops) can be read until the following count source is applied after 1 (count starts) is written to the
TXS bit while the count is being stopped. If the following count source is applied, 1 can be read from the
TXS bit. After writing 1 to the TXS bit, do not access registers associated with timer X (registers TXMR,
PREX, TX, TCSS, and TXIC) except for the TXS bit, until 1 can be read from the TXS bit. The count starts
at the following count source after the TXS bit is set to 1.
Also, after writing 0 (count stops) to the TXS bit during the count, timer X stops counting at the following
count source.
1 (count starts) can be read by reading the TXS bit until the count stops after writing 0 to the TXS bit. After
writing 0 to the TXS bit, do not access registers associated with timer X except for the TXS bit, until 0 can
be read from the TXS bit.
Notes on Timer X
Page 122 of 315
14. Timers
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