R5F2L387ANFP#U1 Renesas Electronics America, R5F2L387ANFP#U1 Datasheet - Page 262
R5F2L387ANFP#U1
Manufacturer Part Number
R5F2L387ANFP#U1
Description
MCU 1KB FLASH 48K ROM 80-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/Lx/38Ar
Datasheet
1.R5F2L387ANFPU1.pdf
(864 pages)
Specifications of R5F2L387ANFP#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
68
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 16x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
80-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 225 of 802
Figure 17.2
17.3.2
The above applies under the following condition:
Both the TSTART and TCSTF bits in the TRACR register are set to 1 (during count operation).
Counter of timer RA
Timer RA has a prescaler and a timer (which counts the prescaler underflows). The prescaler and timer each
consist of a reload register and a counter. When writing to the prescaler or timer, values are written to both the
reload register and counter.
However, values are transferred from the reload register to the counter of the prescaler in synchronization with
the count source. In addition, values are transferred from the reload register to the counter of the timer in
synchronization with prescaler underflows. Therefore, if the prescaler or timer is written to when count
operation is in progress, the counter value is not updated immediately after the WRITE instruction is executed.
Figure 17.2 shows an Operating Example of Timer RA when Counter Value is Rewritten during Count
Operation.
timer RA prescaler
timer RA prescaler
Reload register of
Reload register of
TRAIC register
Count source
Write 01h into the TRAPRE register and
25h into the TRA register by a program.
Timer Write Control during Count Operation
Counter of
timer RA
IR bit in
Operation
Operating Example of Timer RA when Counter Value is Rewritten during Count
0
Previous value
06h
Oct 30, 2009
05h
Previous value
The IR bit remains unchanged until underflow is
generated by a new value.
After writing, the reload register is written
with the first count source.
03h
04h
01h
Reload with
the second
count source
00h
After writing, the reload register is written
at the first underflow.
01h
Reload at
underflow
02h
New value (01h)
00h
Reload at the second underflow
01h
25h
New value (25h)
00h
01h
24h
00h
17. Timer RA
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