R5F21266SNFP#U0 Renesas Electronics America, R5F21266SNFP#U0 Datasheet - Page 126
![IC R8C/26 MCU FLASH 32LQFP](/photos/12/37/123707/r5f21266snfp_u0_sml.jpg)
R5F21266SNFP#U0
Manufacturer Part Number
R5F21266SNFP#U0
Description
IC R8C/26 MCU FLASH 32LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/26r
Datasheet
1.R5F21272SDFPU0.pdf
(487 pages)
Specifications of R5F21266SNFP#U0
Core Size
16/32-Bit
Program Memory Size
32KB (32K x 8)
Core Processor
R8C
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
LED, POR, Voltage Detect, WDT
Number Of I /o
25
Program Memory Type
FLASH
Ram Size
1.5K 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
No. Of I/o's
25
Ram Memory Size
1.5KB
Cpu Speed
20MHz
No. Of Timers
4
Digital Ic Case Style
LQFP
Supply Voltage Range
2.2V To 5.5V
Embedded Interface Type
I2C, UART
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
R0K521276S000BE - KIT DEV RSK-R8C/26-29R0E521000EPB00 - PROBE EMULATOR FOR PC7501
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
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R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
Figure 10.20
Set OCD1 bit to 0 (oscillation stop
Interrupt sources judgement
To oscillation stop detection
detection interrupt disabled).
Sep 26, 2008
NOTE:
(XIN clock stopped)
OCD1 to OCD3: Bits in OCD register
VW2C3: Bit in VW2C register
interrupt routine
1. This disables multiple oscillation stop detection interrupts.
OCD3 = 1 ?
Timer, Voltage Monitor 1, or Voltage Monitor 2 Interrupt (J, K Version)
Example of Determining Interrupt Source for Oscillation Stop Detection, Watchdog
YES
(1)
Page 107 of 453
NO
interrupt enabled) and OCD2 = 1
(on-chip oscillator clock selected
(oscillation stop detection
as system clock) ?
OCD1 = 1
YES
NO
To watchdog timer
(Watchdog timer
interrupt routine
VW2C3 = 1 ?
underflow)
YES
NO
10. Clock Generation Circuit
To voltage monitor 2
interrupt routine
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