R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 173
![IC R8C/23 MCU FLASH 48-LQFP](/photos/12/38/123822/r5f21238dfp_u0_sml.jpg)
R5F21238DFP#U0
Manufacturer Part Number
R5F21238DFP#U0
Description
IC R8C/23 MCU FLASH 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/23r
Specifications of R5F21238DFP#U0
Core Size
16/32-Bit
Program Memory Size
64KB (64K x 8)
Peripherals
POR, Voltage Detect, WDT
Core Processor
R8C
Speed
20MHz
Connectivity
CAN, I²C, LIN, SIO, SSU, UART/USART
Number Of I /o
41
Program Memory Type
FLASH
Ram Size
3K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
No. Of I/o's
41
Ram Memory Size
3KB
Cpu Speed
20MHz
No. Of Timers
4
Digital Ic Case Style
LQFP
Embedded Interface Type
CAN, I2C, UART
Rohs Compliant
Yes
Cpu Family
R8C
Device Core Size
16b
Frequency (max)
20MHz
Interface Type
I2C/UART
Total Internal Ram Size
3KB
# I/os (max)
41
Number Of Timers - General Purpose
5
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
3V
On-chip Adc
12-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
48
Package Type
LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
RCDK8C - KIT DEV EVAL FOR CAN R8C/23R0K521237S000BE - KIT DEV RSK R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
Eeprom Size
-
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
Figure 14.17
14.2.1
Table 14.7
Count Sources
Count Operations
Divide Ratio
Count Start Condition
Count Stop Conditions
Interrupt Request
Generation Timing
TRBO Pin Function
INT0 Pin Function
Read from Timer
Write to Timer
Timer RB I/O Control Register
b7 b6 b5 b4 b3 b2
Timer mode is mode to count a count source which is internally generated or timer RA underflow (see Table
14.7 Timer Mode Specifications). The TRBOCR and TRBSC registers are unused in timer mode.
Figure 14.17 shows the TRBIOC Register in Timer Mode.
Item
Timer Mode
0
0
Timer Mode Specifications
TRBIOC Register in Timer Mode
b1 b0
0 0
Bit Symbol
INOSTG
INOSEG
TRBIOC
(b7-b4)
Symbol
TOCNT
TOPL
Page 151 of 501
—
f1, f2, f8, Timer RA underflow
• Decrement
• When the timer underflows, it reloads the reload register contents before the
1/(n+1)(m+1)
n: setting value in TRBPRE register, m: setting value in TRBPR register
Write 1 (count starts) to the TSTART bit in the TRBCR register
• Write 0 (count stops) to the TSTART bit in the TRBCR register
• Write 1 (count forcibly stop) to the TSTOP bit in the TRBCR register
When timer RB underflows [timer RB interrupt]
Programmable I/O port
Programmable I/O port or INT0 interrupt input
The count value can be read out by reading the TRBPR and TRBPRE registers
• When registers TRBPRE and TRBPR are written while the count is stopped,
• When registers TRBPRE and TRBPR are written to while count operation is in
count continues (when timer RB underflows, the contents of timer RB primary
reload register is reloaded)
values are written to both the reload register and counter.
progress:
If the TWRC bit in the TRBMR register is set to 0, the value is written to both
the reload register and the counter.
If the TWRC bit is set to 1, the value is written to the reload register only.
(Refer to 14.2.1.1 Timer Write Control during Count Operation.)
Timer RB output level select
bit
Timer RB output sw itch bit
One-shot trigger control bit
One-shot trigger polarity
select bit
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
Address
Bit Name
010Ah
Set to 0 in timer mode
Specification
After Reset
Function
00h
14. Timers
RW
RW
RW
RW
RW
—
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