R5F21134DFP#U0 Renesas Electronics America, R5F21134DFP#U0 Datasheet - Page 148

• Manufacturer Part Number: R5F21134DFP#U0
• Description: IC R8C MCU FLASH 32LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/13r

Specifications of R5F21134DFP#U0

• Core Size: 16-Bit
• Program Memory Size: 16KB (16K x 8)
• Oscillator Type: Internal
• Core Processor: R8C
• Speed: 20MHz
• Connectivity: SIO, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 22
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• No. Of I/o's: 22
• Eeprom Memory Size: 4KB
• Ram Memory Size: 1024Byte
• Cpu Speed: 20MHz
• No. Of Timers: 16
• Digital Ic Case: RoHS Compliant
• Controller Family/series: R8C/13
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13R0E521134EPB00 - KIT EMULATOR PROBE FOR PC7501R0E521134CPE00 - EMULATOR COMPACT R8C/13
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

R8C/13 Group
Rev.1.20
REJ09B0111-0120
15. Programmable I/O Ports
15. 1 Description
The programmable input/output ports (hereafter referred to as “I/O ports”) consist of 22 lines P0, P1, P3
to P3
can also be chosen to be or not be pulled high every 4 lines. The port P1 allows the drive capacity of its N-
channel output transistor to be set as necessary. The port P1 can be used as LED drive port if the drive
capacity is set to “HIGH”.
P4
Figures 15.1 to 15.5 show the I/O ports. Figure 15.6 shows the I/O pins.
Each pin functions as an I/O port or a peripheral function input/output.
For details on how to set peripheral functions, refer to each functional description in this manual. If any pin
is used as a peripheral function input, set the direction bit for that pin to “0” (input mode). Any pin used as
an output pin for peripheral functions is directed for output no matter how the corresponding direction bit
is set.
15.1.1 Port Pi Direction Register (PDi Register, i = 0, 1, 3, 4)
15.1.2 Port Pi Register (Pi Register, i = 0 to 4)
15.1.3 Pull-up Control Register 0, Pull-up Control Register 1 (PUR0 and PUR1 Registers)
15.1.4 Port P1 Drive Capacity Control Register (DRR Register)
6
Figure 15.7 shows the PDi register.
This register selects whether the I/O port is to be used for input or output. The bits in this register
correspond one for one to each port.
Figure 15.8 shows the Pi register.
Data I/O to and from external devices are accomplished by reading and writing to the Pi register. The
Pi register consists of a port latch to hold the output data and a circuit to read the pin status. For ports
set for input mode, the input level of the pin can be read by reading the corresponding Pi register, and
data can be written to the port latch by writing to the Pi register.
For ports set for output mode, the port latch can be read by reading the corresponding Pi register, and
data can be written to the port latch by writing to the Pi register. The data written to the port latch is
output from the pin. The bits in the Pi register correspond one for one to each port.
Figure 15.9 shows the PUR0 and PUR1 registers.
The PUR0 and PUR1 register bits can be used to select whether or not to pull the corresponding port
high in 4 bit units. The port chosen to be pulled high has a pull-up resistor connected to it when the
direction bit is set for input mode.
Figure 15.9 shows the DRR register.
The DRR register is used to control the drive capacity of the port P1 N-channel output transistor. The
bits in this register correspond one for one to each port.
Jan 27, 2006
and P4
3
, P3
7
, and P4
7
can be used as an input only port if the main clock oscillation circuit is not used.
page 137 of 205
5
. Each port can be set for input or output every line by using a direction register, and
15. Programmable I/O Ports
0