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R5F21255SDXXXFP Schematic ( PDF Datasheet ) - Renesas

Teilenummer R5F21255SDXXXFP
Beschreibung MCU
Hersteller Renesas
Logo Renesas Logo 




Gesamt 70 Seiten
R5F21255SDXXXFP Datasheet, Funktion
REJ09B0244-0300
www.DataSheet4U.com
16
R8C/24 ,Group R8C/25 Group
Hardware Manual
RENESAS 16-BIT SINGLE-CHIP MCU
R8C FAMILY / R8C/2x SERIES
All information contained in these materials, including products and product specifications,
represents information on the product at the time of publication and is subject to change by
Renesas Technology Corp. without notice. Please review the latest information published
by Renesas Technology Corp. through various means, including the Renesas Technology
Corp. website (http://www.renesas.com).
Rev.3.00
Revision Date: Feb 29, 2008
www.renesas.com






R5F21255SDXXXFP Datasheet, Funktion
3. Register Notation
The symbols and terms used in register diagrams are described below.
XXX Register
b7 b6 b5 b4 b3 b2 b1 b0
0
*1
Symbol
XXX
Bit Symbol
Bit Name
www.DataSheet4U.com
XXX0
XXX bits
XXX1
Address
XXX
After Reset
00h
b1 b0
1 0: XXX
0 1: XXX
1 0: Do not set.
1 1: XXX
Function
Nothing is assigned. If necessary, set to 0.
(b2) When read, the content is undefined.
(b3) Reserved bits
XXX4
XXX bits
Set to 0.
Function varies according to the operating
mode.
XXX5
XXX6
XXX7
XXX bit
0: XXX
1: XXX
RW *2
RW
RW
*3
RW *4
RW
WO
RW
RO
*1
Blank: Set to 0 or 1 according to the application.
0: Set to 0.
1: Set to 1.
X: Nothing is assigned.
*2
RW: Read and write.
RO: Read only.
WO: Write only.
: Nothing is assigned.
*3
• Reserved bit
Reserved bit. Set to specified value.
*4
• Nothing is assigned
Nothing is assigned to the bit. As the bit may be used for future functions, if necessary, set to 0.
• Do not set to a value
Operation is not guaranteed when a value is set.
• Function varies according to the operating mode.
The function of the bit varies with the peripheral function mode. Refer to the register diagram for information
on the individual modes.

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R5F21255SDXXXFP pdf, datenblatt
17.4.4 Hardware LIN End Processing ......................................................................................................... 380
17.5 Interrupt Requests .................................................................................................................................. 381
17.6 Notes on Hardware LIN ........................................................................................................................ 382
18. A/D Converter ............................................................................................................................. 383
18.1
18.2
18.3
18.4
www.DataSheet4U.com18.5
18.6
18.7
One-Shot Mode ..................................................................................................................................... 387
Repeat Mode .......................................................................................................................................... 390
Sample and Hold ................................................................................................................................... 393
A/D Conversion Cycles ......................................................................................................................... 393
Internal Equivalent Circuit of Analog Input .......................................................................................... 394
Output Impedance of Sensor under A/D Conversion ............................................................................ 395
Notes on A/D Converter ........................................................................................................................ 396
19. Flash Memory ............................................................................................................................. 397
19.1 Overview ............................................................................................................................................... 397
19.2 Memory Map ......................................................................................................................................... 398
19.3 Functions to Prevent Rewriting of Flash Memory ................................................................................ 400
19.3.1 ID Code Check Function .................................................................................................................. 400
19.3.2 ROM Code Protect Function ............................................................................................................ 401
19.4 CPU Rewrite Mode ............................................................................................................................... 402
19.4.1 EW0 Mode ........................................................................................................................................ 403
19.4.2 EW1 Mode ........................................................................................................................................ 403
19.4.3 Software Commands ......................................................................................................................... 412
19.4.4 Status Registers ................................................................................................................................. 417
19.4.5 Full Status Check .............................................................................................................................. 418
19.5 Standard Serial I/O Mode ...................................................................................................................... 420
19.5.1 ID Code Check Function .................................................................................................................. 420
19.6 Parallel I/O Mode .................................................................................................................................. 424
19.6.1 ROM Code Protect Function ............................................................................................................ 424
19.7 Notes on Flash Memory ........................................................................................................................ 425
19.7.1 CPU Rewrite Mode ........................................................................................................................... 425
20. Electrical Characteristics ............................................................................................................ 428
21. Usage Notes ............................................................................................................................... 454
21.1 Notes on Clock Generation Circuit ....................................................................................................... 454
21.1.1 Stop Mode ......................................................................................................................................... 454
21.1.2 Wait Mode ........................................................................................................................................ 454
21.1.3 Oscillation Stop Detection Function ................................................................................................. 454
21.1.4 Oscillation Circuit Constants ............................................................................................................ 454
21.2 Notes on Interrupts ................................................................................................................................ 455
21.2.1 Reading Address 00000h .................................................................................................................. 455
21.2.2 SP Setting .......................................................................................................................................... 455
21.2.3 External Interrupt and Key Input Interrupt ....................................................................................... 455
21.2.4 Changing Interrupt Sources .............................................................................................................. 456
21.2.5 Changing Interrupt Control Register Contents ................................................................................. 457
21.3 Notes on Timers .................................................................................................................................... 458
21.3.1 Notes on Timer RA ........................................................................................................................... 458
21.3.2 Notes on Timer RB ........................................................................................................................... 459
A-5

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