R5F2L3A7ANFP#U1 Renesas Electronics America, R5F2L3A7ANFP#U1 Datasheet - Page 272
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 235 of 802
Figure 17.4
17.7.2
The above applies when the period from one rising edge to the next rising edge of the measured pulse is measured
(TEDGSEL = 0) with the initial value of the TRA register as 0Fh.
Notes:
1. The content of the read-out buffer can be read by reading the TRA register in pulse period measurement mode.
2. After an active edge of the measured pulse is input, the TEDGF bit in the TRACR register is set to 1 (active edge received)
3. The TRA register should be read before the next active edge is input after the TEDGF bit is set to 1 (active edge received).
4. To set to 0 by a program, use a MOV instruction to write 0 to the TEDGF bit in the TRACR register.
5. To set to 0 by a program, use a MOV instruction to write 0 to the TUNDF bit.
6. Bits TUNDF and TEDGF are both set to 1 if timer RA underflows and reloads on an active edge simultaneously.
Underflow signal of
timer RA prescaler
when the timer RA prescaler underflows for the second time.
The contents of the read-out buffer are retained until the TRA register is read. If the TRA register is not read before the next active edge
is input, the measured result of the previous period is retained.
At the same time, write 1 to the TUNDF bit in the TRACR register.
At the same time, write 1 to the TEDGF bit.
(TRAIO pin input)
Contents of TRA
Measured pulse
TRACR register
read-out buffer
TRACR register
TRACR register
TRAIC register
TSTART bit in
TEDGF bit in
TUNDF bit in
Operating Example
Contents of
IR bit in
Operating Example in Pulse Period Measurement Mode
(1)
1
0
1
0
1
0
1
0
1
0
Count starts
Set to 1 by a program.
0Fh
Oct 30, 2009
0Fh
0Eh 0Dh 0Fh 0Eh 0Dh 0Ch 0Bh 0Ah 09h 0Fh 0Eh 0Dh
0Eh
(Note 2)
Retained
TRA reload
0Dh
TRA read
Set to 0 when an interrupt request is acknowledged or by a program.
Set to 0 by a program.
(3)
0Bh 0Ah
(Note 2)
Retained
(Note 4)
TRA reload
09h
0Dh
Set to 0 by a program.
01h 00h 0Fh 0Eh
01h 00h 0Fh 0Eh
(Note 6)
17. Timer RA
Underflow
(Note 5)
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