R5F21256SNFP#U0 Renesas Electronics America, R5F21256SNFP#U0 Datasheet - Page 117
R5F21256SNFP#U0
Manufacturer Part Number
R5F21256SNFP#U0
Description
IC R8C MCU FLASH 32K 52LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/25r
Datasheets
1.R5F211A2SPU0.pdf
(300 pages)
2.R5F21246SDFPU0.pdf
(61 pages)
3.R5F21246SDFPU0.pdf
(527 pages)
Specifications of R5F21256SNFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, Voltage Detect, WDT
Number Of I /o
41
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K 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
52-LQFP
For Use With
R0K521256S000BE - KIT EVAL STARTER FOR R8C/25
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21256SNFP#U0R5F21256SNFP#ES
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 10.17
Set OCD1 bit to 0 (oscillation stop
To oscillation stop detection
Interrupt sources judgment
detection interrupt disabled).
NOTE:
(XIN clock stopped)
OCD1 to OCD3: Bits in OCD register
VW2C2, VW2C3: Bits in VW2C register
interrupt routine
1. This disables multiple oscillation stop detection interrupts.
OCD3 = 1 ?
Feb 29, 2008
YES
Timer, Voltage Monitor 1, or Voltage Monitor 2 Interrupt
Example of Determining Interrupt Source for Oscillation Stop Detection, Watchdog
(1)
NO
interrupt enabled) and OCD2 = 1
(on-chip oscillator clock selected
Page 98 of 485
(oscillation stop detection
as system clock) ?
OCD1 = 1
YES
NO
To watchdog timer
(Watchdog timer
interrupt routine
VW2C3 = 1 ?
underflow)
YES
NO
To voltage monitor 2
(passing Vdet2)
interrupt routine
VW2C2 = 1 ?
YES
10. Clock Generation Circuit
NO
To voltage monitor 1
interrupt routine
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