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R8C2K Datasheet(PDF) 379 Page - Renesas Technology Corp

Part # R8C2K
Description  RENESAS MCU R8C FAMILY / R8C/2x SERIES
PDF  471 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

R8C2K Datasheet(HTML) 379 Page - Renesas Technology Corp

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R8C/2K Group, R8C/2L Group
20. Flash Memory
Rev.1.10
Dec 21, 2007
Page 362 of 450
REJ09B0406-0110
20. Flash Memory
20.1
Overview
Rewrite operations to the flash memory can be performed in three modes
: CPU rewrite, standard serial I/O, and
parallel I/O.
Table 20.1 lists the Flash Memory Version Performance (refer to Tables 1.1 and 1.4 Specifications for items not
listed in Table 20.1).
NOTES:
1. Definition of programming and erasure endurance.
The programming and erasure endurance is defined on a per-block basis.
2. Blocks A and B (data flash) are included in the R8C/2L Group.
Table 20.1
Flash Memory Version Performance
Item
Specification
Flash memory operating modes
3 modes (CPU rewrite, standard serial I/O, and parallel I/O)
Division of erase block
Refer to Figures 20.1 and 20.2.
Programming method
Byte unit
Erase method
Block erase
Programming and erasure control method
Programming and erasure control by software command
Suspend functions
Program-suspend and erase-suspend
Protection method
Program ROM protection by FMR0 register
Number of commands
5 commands
Programming and
erasure endurance(1)
Blocks 0 and 1
(program ROM)
R8C/2K Group: 100 times; R8C/2L Group: 1,000 times
Blocks A and B
(data flash)(2)
10,000 times
Programming and erasure voltage
VCC = 2.7 to 5.5 V
ID code check function
Standard serial I/O mode supported
ROM code protect
Parallel I/O mode supported
Table 20.2
Flash Memory Rewrite Modes
Flash Memory
Rewrite Mode
CPU Rewrite Mode
Standard Serial I/O Mode
Parallel I/O Mode
Function
User ROM area is rewritten
by executing software
commands from the CPU.
User ROM area is rewritten
by a dedicated serial
programmer.
User ROM area is rewritten
by a dedicated parallel
programmer.
Rewritable areas
User ROM area
User ROM area
User ROM area
Rewrite programs User program
Standard boot program
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