R5F21237DFP#U0 Renesas Electronics America, R5F21237DFP#U0 Datasheet - Page 152
![IC R8C/23 MCU FLASH 48-LQFP](/photos/12/18/121887/r5f21237dfp_u0_sml.jpg)
R5F21237DFP#U0
Manufacturer Part Number
R5F21237DFP#U0
Description
IC R8C/23 MCU FLASH 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/23r
Specifications of R5F21237DFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
CAN, I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, Voltage Detect, WDT
Number Of I /o
41
Program Memory Size
48KB (48K x 8)
Program Memory Type
FLASH
Ram Size
2.5K 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
For Use With
RCDK8C - KIT DEV EVAL FOR CAN R8C/23R0K521237S000BE - KIT DEV RSK R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 152 of 551
- Download datasheet (6Mb)
R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
14.1
Figure 14.1
Timer RA is an 8-bit timer with an 8-bit prescaler.
The prescaler and timer consist of the reload register and counter. The reload register and counter are allocated at
the same address. When accessing the TRAPRE and TRA registers, the reload register and counter can be accessed
(refer to Table 14.2 to 14.6 the Specification of Each Modes).
The count source for timer RA is the operating clock that regulates the timing of timer operations such as counting
and reloading.
Figure 14.1 shows the Block Diagram of Timer RA. Figures 14.2 to 14.4 show the registers associated with Timer
RA.
Timer RA contains five operation modes listed as follows:
INT1/TRAIO (P1-7) pin
INT1/TRAIO (P1-5) pin
•
•
•
•
•
Timer mode:
Pulse output mode:
Event counter mode:
Pulse width measurement mode: The timer measures the pulse width of an external pulse.
Pulse period measurement mode: The timer measures the pulse period of an external pulse.
Timer RA
TCK2 to TCK0 bit
fOCO
TRAO pin
f1
f8
f2
Block Diagram of Timer RA
= 000b
= 001b
= 010b
= 011b
TIOSEL = 0
TIOSEL = 1
TIPF1 to TIPF0 bit
f32
f1
f8
= 00b
= 10b
= 11b
TOENA bit
Page 130 of 501
TIPF1 to
TIPF0 bit
= Except 00b
= 00b
TMOD2 to TMOD0
Digital
filter
= Except 010b
TMOD2 to TMOD0
invert the polarity by underflow of the timer.
The timer counts an internal count source.
The timer counts an internal count source and outputs the pulses which
The timer counts external pulses.
switching
Polarity
= 010b
TMOD2 to TMOD0 = 001b
TOPCR bit
TCKCUT
TMOD2 to TMOD0
bit
= 011b or 100b
TCSTF, TSTOP: TRACR register
TEDGSEL, TOPCR, TOENA, TIOSEL, TIPF1, TIPF0: TRAIOC register
TMOD2 to TMOD0, TCK2 to TCK0, TCKCUT: TRAMR register
TCSTF
bit
TEDGSEL = 1
TEDGSEL = 0
Count control
TRAPRE register
register
circle
Reload
(Prescaler)
Counter
Peripheral data bus
Q
Q
Measurement completion signal
Toggle flip-flop
CLR
register
Reload
TRA register
CK
Counter
(Timer)
Write to TRAMR register
Write to TSTOP bit 1
Underflow signal
Timer RA interrupt
14. Timers
Related parts for R5F21237DFP#U0
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![R0K330290S001BE](/photos/28/41/284146/r0k330290s001be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR M16C/29
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K5212D8S001BE](/photos/24/13/241324/4607177_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR R8C/2D
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K33062PS001BE](/photos/24/13/241320/4607173_tmb.jpg)
Part Number:
Description:
R0K33062P STARTER KIT
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K521237S001BE](/photos/28/41/284170/r0k521237s001be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR R8C/23 E8A
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K521256S001BE](/photos/24/13/241323/4607176_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR R8C/25
Manufacturer:
Renesas Electronics America
Datasheet:
![YLCDRSK2456S](/images/manufacturer_photos/0/5/560/renesas_electronics_america_tmb.jpg)
Part Number:
Description:
KIT STARTER H8S2456 SHARPE DSPLY
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K521380S000BE](/photos/28/41/284144/r0k521380s000be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR R8C38C
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K521350S000BE](/photos/28/41/284145/r0k521350s000be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR R8C35C
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K52L3A0S000BE](/photos/28/41/284149/r0k52l3a0s000be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR R8CL3AC+LCD APPS
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K556100S000BE](/images/manufacturer_photos/0/5/560/renesas_electronics_america_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR RX610
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K564189S000BE](/photos/28/41/284173/r0k564189s000be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR R32C/118
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K521276S000BE](/photos/9/26/92647/r0k521276s000be_tmb.jpg)
Part Number:
Description:
KIT DEV RSK-R8C/26-29
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K571242S001BE](/photos/9/23/92397/r0k571242s001be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR SH7124
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K561622S000BE](/photos/9/23/92398/r0k561622s000be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR H8SX/1622
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K572030S000BE](/photos/9/24/92406/r0k572030s000be_tmb.jpg)
Part Number:
Description:
KIT DEV FOR SH7203
Manufacturer:
Renesas Electronics America
Datasheet: