R5F21272SNFP#U0 Renesas Electronics America, R5F21272SNFP#U0 Datasheet - Page 100

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
Figure 10.2
System Clock Control Register 0
b7 b6 b5 b4 b3 b2 b1 b0
NOTES:
0
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Set the PRC0 bit in the PRCR register to 1 (w rite enable) before rew riting the CM0 register.
The MCU enters stop mode, the CM03 bit is set to 1 (high). Rew rite the CM03 bit w hile the XCIN clock oscillation
stabilizes.
P4_6 and P4_7 can be used as input ports w hen the CM04 bit is set to 0 (XCIN clock stops), the CM05 bit is set to 1
(XIN clock stops) and the CM13 bit in the CM1 register is set to 0 (P4_6, P4_7).
The CM04 bit can be set to 1 by a program but cannot be set to 0.
When the CM10 bit is set to 1 (stop mode) and the CM04 bit is set to 1 (XCIN clock oscillates), the XCOUT (P4_7) pin
goes “H”.
When the CM04 bit is set to 0 (XCIN clock stops), P4_7 (XCOUT) enters input mode.
To use the XCIN clock, set the CM04 bit to 1. Also, set ports P4_6 and P4_7 as input ports w ithout pull-up.
Set the CM01 bit to 1 (XCIN clock).
The CM05 bit stops the XIN clock w hen the high-speed on-chip oscillator mode, low -speed on-chip oscillator mode is
selected. Do not use this bit to detect w hether the XIN clock is stopped. To stop the XIN clock, set the bits in the
follow ing order:
(a) Set bits OCD1 to OCD0 in the OCD register to 00b.
(b) Set the OCD2 bit to 1 (selects on-chip oscillator clock).
Set the CM01 bit to 0 (XIN clock).
During external clock input, only the clock oscillation buffer is turned off and clock input is acknow ledged.
When entering stop mode, the CM06 bit is set to 1 (divide-by-8 mode).
For J, K version, the XCIN clock oscillation circuit cannot be used. Do not set to 1.
Sep 26, 2008
CM0 Register
0
Bit Symbol
Symbol
CM01
CM02
CM03
CM04
CM05
CM06
CM0
(b0)
(b7)
Page 81 of 453
Reserved bit
XIN-XCIN sw itch bit
WAIT peripheral function clock
stop bit
XCIN-XCOUT drive capacity
select bit
XCIN clock (XCIN-XCOUT)
oscillate bit
XIN clock (XIN-XOUT)
stop bit
System clock division select bit
0
Reserved bit
(11)
(1)
(3, 8)
(2)
(3, 4, 5, 12)
Address
Bit Name
0006h
(12)
Set to 0.
0 : XIN clock
1 : XCIN clock
0 : Peripheral function clock does not stop
1 : Peripheral function clock stops in w ait
0 : Low
1 : High
0 : XCIN clock stops
1 : XCIN clock oscillates
0 : XIN clock oscillates
1 : XIN clock stops
0 : CM16, CM17 enabled
1 : Divide-by-8 mode
Set to 0.
in w ait mode
mode
After Reset
01101000b
(10)
Function
(9)
(6, 7)
10. Clock Generation Circuit
RW
RW
RW
RW
RW
RW
RW
RW
RW

Related parts for R5F21272SNFP#U0