R5F21238DFP#U0 Renesas Electronics America, R5F21238DFP#U0 Datasheet - Page 67
![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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- Download datasheet (6Mb)
R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
7.
There are 41 programmable Input/Output ports (I/O ports) P0 to P2, P3_0, P3_1, P3_3 to P3_5, P3_7, P4_3 to P4_5,
and P6. Also, P4_6 and P4_7 can be used as input-only ports if the XIN clock oscillation circuit is not used, and the
P4_2 can be used as an input-only port if the A/D converter is not used.
7.1
Table 7.1
NOTES:
Table 7.2
i = 0 to 4, 6, j = 0 to 7
NOTE:
P0 to P2, P6
P3_0, P3_1, P3_3 to
P3_5, P3_7
P4_3
P4_4, P4_5
P4_2
P4_6, P4_7
Reading
Writing
Operation When
The PDi_j (i = 0 to 4, 6, j = 0 to 7) bit in the PDi register controls I/O of the ports P0 to P2, P3_0, P3_1, P3_3 to
P3_5, P3_7, P4_3 to P4_5, and P6. The Pi register consists of a port latch to hold output data and a circuit to read
pin state.
Figures 7.1 to 7.7 show the Configurations of Programmable I/O Ports. Table 7.2 lists the Functions of
Programmable I/O Ports. Also, Figure 7.9 shows the PDi (i = 0 to 4 and 6) Registers. Figure 7.10 shows the Pi (i =
0 to 4 and 6) Registers, Figure 7.11 shows the Registers PUR0 and PUR1 and Figure 7.12 shows the PMR Register.
Programmable I/O Ports
1. In input mode, whether the internal pull-up resistor is connected or not can be selected by the PUR0
2. When the A/D converter is not used, these ports can be used as the input port only.
3. When the XIN clock oscillation circuit is not used, these ports can be used as the input port only.
1. Nothing is assigned to bits PD3_2, PD3_6, PD4_0 to PD4_2, PD4_6, and PD4_7.
Pi Register
Accessing
(2)
and PUR1 registers.
Functions of Programmable I/O Ports
Ports
(3)
Overview of Programmable I/O Ports
Functions of Programmable I/O Ports
Read pin input level
Write to the port latch
When PDi_j bit is set to 0 (input mode)
Page 45 of 501
I/O
I/O CMOS3 state
I/O CMOS3 state
I/O CMOS3 state
I/O CMOS3 state
I
(No output function)
Type of Output
Value of PDi_j Bit in PDi Register
Set every bit
Set every bit
Set every bit
Set every bit
None
Read the port latch
Write to the port latch. The value written in
the port latch, it is output from the pin.
I/O Setting
When PDi_j bit is set to 1 (output mode)
(1)
Internal Pull-Up Resister
Set every 4 bits
Set every 3 bits
Set every bit
Set every 2 bits
None
7. Programmable I/O Ports
(1)
(1)
(1)
(1)
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