R5F21254SDFP#U0 Renesas Electronics America, R5F21254SDFP#U0 Datasheet - Page 287
R5F21254SDFP#U0
Manufacturer Part Number
R5F21254SDFP#U0
Description
IC R8C MCU FLASH 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 R5F21254SDFP#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
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
-40°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:
R5F21254SDFP#U0R5F21254SDFP#V2
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 287 of 300
- Download datasheet (2Mb)
Q
A
What is the difference between the user stack pointer (USP) and the interrupt stack pointer (ISP)?
What are their roles?
USP is used when using the OS. When several tasks are run, the OS secures stack areas to save
the contents of registers for individual tasks. Also, stack areas have to be secured, task by task, to
be used for handling interrupts that occur while tasks are being executed. If you use USP and ISP
in such an instance, the stack for interrupts can be shared by these tasks. This allows efficient use
of stack areas.
Q&A-4
CPU
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