R5F21274SNFP#U0 Renesas Electronics America, R5F21274SNFP#U0 Datasheet - Page 95

IC R8C/27 MCU FLASH 32LQFP

R5F21274SNFP#U0

Manufacturer Part Number
R5F21274SNFP#U0
Description
IC R8C/27 MCU FLASH 32LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/27r
Datasheet

Specifications of R5F21274SNFP#U0

Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
LED, POR, Voltage Detect, WDT
Number Of I /o
25
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
32-LQFP
For Use With
R0K521276S000BE - KIT DEV RSK-R8C/26-29R0E521000EPB00 - PROBE EMULATOR FOR PC7501
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-

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R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
7.5
Figure 7.14
Table 7.41
NOTES:
Ports P0, P1, P3_1, P3_3 to P3_7,
P4_3 to P4_5, P5_3, P5_4
Ports P4_6, P4_7
Port P4_2, VREF
RESET
Table 7.41 lists the Unassigned Pin Handling.
1. If these ports are set to output mode and left open, they remain in input mode until they are switched
2. Connect these unassigned pins to the MCU using the shortest wire length (2 cm or less) possible.
3. When the power-on reset function is in use.
to output mode by a program. The voltage level of these pins may be undefined and the power
current may increase while the ports remain in input mode.
The content of the direction registers may change due to noise or program runaway caused by
noise. In order to enhance program reliability, the program should periodically repeat the setting of
the direction registers.
Unassigned Pin Handling
Sep 26, 2008
(3)
Pin Name
Unassigned Pin Handling
Unassigned Pin Handling
Page 76 of 453
NOTE:
1. When the power-on reset function is in use.
P3_1, P3_3 to P3_7,
P4_3 to P4_5,
• After setting to input mode, connect each pin to VSS via a resistor
• After setting to output mode, leave these pins open.
Connect to VCC via a pull-up resistor
Connect to VCC
Connect to VCC via a pull-up resistor
Port P0, P1,
P5_3, P5_4
(pull-down) or connect each pin to VCC via a resistor (pull-up).
MCU
Port P4_6, P4_7
Port P4_2/VREF
(Output mode)
(Input mode )
(Input mode)
RESET
:
:
(1)
Open
:
:
Connection
(2)
(2)
7. Programmable I/O Ports
(1, 2)
(2)

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