R5F21272SNFP#U0 Renesas Electronics America, R5F21272SNFP#U0 Datasheet - Page 110

IC R8C/27 MCU FLASH 32LQFP

R5F21272SNFP#U0

Manufacturer Part Number
R5F21272SNFP#U0
Description
IC R8C/27 MCU FLASH 32LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/27r
Datasheet

Specifications of R5F21272SNFP#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
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
512 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
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R5F21272SNFP#U0
Manufacturer:
Renesas Electronics America
Quantity:
135
Company:
Part Number:
R5F21272SNFP#U0
Manufacturer:
SAMSUNG
Quantity:
300 000
Company:
Part Number:
R5F21272SNFP#U0
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
R5F21272SNFP#U0R5F21272SNFP#V2
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
R5F21272SNFP#U0R5F21272SNFP#X6
Manufacturer:
Renesas Electronics America
Quantity:
10 000
R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
10.3
Figure 10.12
This clock is supplied by the XCIN clock oscillation circuit. This clock is used as the clock source for the CPU
clock, peripheral function clock. The XCIN clock oscillation circuit is configured by connecting a resonator
between the XCIN and XCOUT pins. The XCIN clock oscillation circuit includes an on-chip a feedback resistor,
which is disconnected from the oscillation circuit in stop mode in order to reduce the amount of power consumed in
the chip. The XCIN clock oscillation circuit may also be configured by feeding an externally generated clock to the
XCIN pin.
Figure 10.12 shows Examples of XCIN Clock Connection Circuits.
During and after reset, the XCIN clock stops.
The XCIN clock starts oscillating when the CM01 bit in the CM0 register is set to 1 (XCIN clock) and the CM04
bit in the CM0 register is set to 1 (XCIN-XCOUT pin).
To use the XCIN clock for the CPU clock source, set the OCD2 bit in the OCD register to 0 (selects XIN clock)
after the XCIN clock is oscillating stably.
This MCU has an on-chip feedback resistor and on-chip resistor disable/enable switching is possible by the CM12
bit in the CM1 register.
In stop mode, all clocks including the XCIN clock stop. Refer to 10.5 Power Control for details.
XCIN Clock (For N, D Version Only)
Sep 26, 2008
External crystal oscillator circuit
NOTE:
1. Insert a damping resistor and feedback resistor if required. The resistance will vary depending on the oscillator and
XCIN
(on-chip feedback resistor)
the oscillation drive capacity setting. Use the value recommended by the manufacturer of the oscillator.
When the oscillation drive capacity is set to low, check that oscillation is stable. Also, if the oscillator manufacturer's
data sheet specifies that a feedback resistor be added to the chip externally, insert a feedback resistor between
XCIN and XCOUT following the instructions.
Examples of XCIN Clock Connection Circuits
CIN
MCU
Rf
Page 91 of 453
(1)
XCOUT
Rd
COUT
(1)
VCC
VSS
Externally derived clock
XCIN
External clock input circuit
(on-chip feedback resistor)
MCU
10. Clock Generation Circuit
XCOUT
Open

Related parts for R5F21272SNFP#U0