R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 134
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
-
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Manufacturer
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R8C/1A Group, R8C/1B Group
Rev.1.30
REJ09B0252-0130
14.1.4
Table 14.5
Count sources
Count operations
Count start condition
Count stop condition
Interrupt request
generation timing
INT10/CNTR00,
INT11/CNTR01
pin functions
CNTR0 pin function
Read from timer
Write to timer
Select functions
In pulse width measurement mode, the pulse width of an external signal input to the INT1/CNTR0 pin is
measured (refer to Table 14.5 Pulse Width Measurement Mode Specifications). Figure 14.7 shows the
TXMR Register in Pulse Width Measurement Mode. Figure 14.8 shows an Operating Example in Pulse Width
Measurement Mode.
Dec 08, 2006
Item
Pulse Width Measurement Mode
Pulse Width Measurement Mode Specifications
Page 116 of 315
f1, f2, f8, fRING
• Decrement
• Continuously counts the selected signal only when the measured pulse is “H”
• When the timer underflows, the contents of the reload register are reloaded
1 (count starts) is written to the TXS bit in the TXMR register.
0 (count stops) is written to the TXS bit in the TXMR register.
• When timer X underflows [timer X interrupt].
• Rising or falling of the CNTR0 input (end of measurement period) [INT1
Measured pulse input (INT1 interrupt input)
Programmable I/O port
The count value can be read out by reading registers TX and PREX.
• When registers TX and PREX are written while the count is stopped, values
• When registers TX and PREX are written during the count, the value is written
• INT1/CNTR0 signal polarity switch function
• Measured pulse input pin select function
level, or conversely only “L” level.
and the count is continued.
interrupt]
are written to both the reload register and counter.
to each reload register of registers TX and PREX at the following count source
input, the data is transferred to the counter at the second count source input,
and the count re-starts at the third count source input.
The R0EDG bit can select “H” or “L” level period for the input pulse width
measurement.
The CNTRSEL bit in the UCON register can select the CNTR00 or CNTR01
pin.
Specification
14. Timers
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