R5F21254SNFP#U0 Renesas Electronics America, R5F21254SNFP#U0 Datasheet - Page 9
![IC R8C MCU FLASH 16K 52LQFP](/photos/12/18/121838/r5f21254snfp_u0_sml.jpg)
R5F21254SNFP#U0
Manufacturer Part Number
R5F21254SNFP#U0
Description
IC R8C MCU FLASH 16K 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 R5F21254SNFP#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
-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
-
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Chapter 6
5.2 Interrupt Control ...................................................................................................................... 249
5.3 Interrupt Sequence .................................................................................................................252
5.4 Returning from Interrupt Routines ..........................................................................................255
5.5 Interrupt Priority ...................................................................................................................... 256
5.6 Multiple Interrupts ................................................................................................................... 257
5.7 Note on Interrupts ................................................................................................................... 259
6.1 Instruction Queue Buffer ......................................................................................................... 262
5.2.1 I Flag ...............................................................................................................................249
5.2.2 IR Bit ...............................................................................................................................249
5.2.3 ILVL2 to ILVL0 bis, IPL ................................................................................................... 250
5.2.4 Changing Interrupt Control Register ............................................................................... 251
5.3.1 Interrupt Response Time ................................................................................................ 253
5.3.2 Changes of IPL When Interrupt Request Acknowledged ............................................... 253
5.3.3 Saving Register Contents ...............................................................................................254
5.7.1 Reading Address 0000016 ............................................................................................. 259
5.7.2 SP Setting ....................................................................................................................... 259
5.7.3 Modifying Interrupt Control Register ............................................................................... 259
Calculating the Number of Cycles ________________________________
A-3
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