R5F2L3A7ANFP#U1 Renesas Electronics America, R5F2L3A7ANFP#U1 Datasheet - Page 795
R5F2L3A7ANFP#U1
Manufacturer Part Number
R5F2L3A7ANFP#U1
Description
MCU FLASH 48+4KB 64LQFP
Manufacturer
Renesas Electronics America
Series
R8C/Lx/3AAr
Datasheet
1.R5F2L387ANFPU1.pdf
(864 pages)
Specifications of R5F2L3A7ANFP#U1
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
LCD, POR, PWM, Voltage Detect, WDT
Number Of I /o
88
Program Memory Size
48KB (48K x 8)
Program Memory Type
FLASH
Ram Size
6K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 20x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
64-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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R8C/L35A Group, R8C/L36A Group, R8C/L38A Group, R8C/L3AA Group,
R8C/L35B Group, R8C/L36B Group, R8C/L38B Group, R8C/L3AB Group
REJ09B0441-0100 Rev.1.00
Page 758 of 802
35.7
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Timer RA stops counting after a reset. Set the values in the timer RA and timer RA prescalers before the count
starts.
Even if the prescaler and timer RA are read out in 16-bit units, these registers are read 1 byte at a time in the
MCU. Consequently, the timer value may be updated during the period when these two registers are being read.
In pulse width measurement mode and pulse period measurement mode, bits TEDGF and TUNDF in the TRACR
register can be set to 0 by 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 TRACR register, the TEDGF or TUNDF
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 TEDGF or TUNDF bit which is not supposed to be set to 0 with the MOV instruction.
When changing to pulse period measurement mode from another mode, the contents of bits TEDGF and TUNDF
are undefined. Write 0 to bits TEDGF and TUNDF before the count starts.
The TEDGF bit may be set to 1 by the first timer RA prescaler underflow generated after the count starts.
When using the pulse period measurement mode, leave two or more periods of the timer RA prescaler
immediately after the count starts, then set the TEDGF bit to 0.
The TCSTF bit remains 0 (count stops) for zero or one cycle of the count source after setting the TSTART bit to
1 (count starts) while the count is stopped.
During this time, do not access registers associated with timer RA
counting at the first active edge of the count source after the TCSTF bit is set to 1 (during count operation).
The TCSTF bit remains 1 for zero or one cycle of the count source after setting the TSTART bit to 0 (count stops)
while the count is in progress. Timer RA counting is stopped when the TCSTF bit is set to 0.
During this time, do not access registers associated with timer RA
Note:
When the TRAPRE register is continuously written during count operation (TCSTF bit is set to 1), allow three or
more cycles of the count source clock for each write interval.
When the TRA register is continuously written during count operation (TCSTF bit is set to 1), allow three or
more cycles of the prescaler underflow for each write interval.
1. Registers associated with timer RA:
Notes on Timer RA
TRACR, TRAIOC, TRAMR, TRAPRE, and TRA
Oct 30, 2009
(1)
(1)
other than the TCSTF bit.
other than the TCSTF bit. Timer RA starts
35. Usage Notes
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