參數(shù)資料
型號: PC89C660
廠商: NXP Semiconductors N.V.
元件分類: 8位微控制器
英文描述: 80C51 8-bit Flash microcontroller family
中文描述: 80C51的8位閃存微控制器系列
文件頁數(shù): 67/89頁
文件大?。?/td> 491K
代理商: PC89C660
Philips Semiconductors
Product data
P89C660/P89C662/P89C664/
P89C668
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/1KB/2KB/8KB RAM
2002 Oct 28
67
RECORD TYPE
COMMAND/DATA FUNCTION
03
Miscellaneous Write Functions
:nnxxxx03ffssddcc
Where:
nn
xxxx
03
ff
ss
dd
cc
= number of bytes (hex) in record
= required field, but value is a “don’t care”
= Write Function
= subfunction code
= selection code
= data input (as needed)
= checksum
Subfunction Code = 01 (Erase Blocks)
ff = 01
ss = block code as shown below:
block 0, 0k to 8k, 00H
block 1, 8k to 16k, 20H
block 2, 16k to 32k, 40H
block 3, 32k to 48k, 80H
block 4, 48k to 64k, C0H
Example:
:0200000301C03C erase block 4
Subfunction Code = 04 (Erase Boot Vector and Status Byte)
ff = 04
ss = don’t care
Example:
:020000030400F7 erase boot vector and status byte
Subfunction Code = 05 (Program Security Bits)
ff = 05
ss = 00 program security bit 1 (inhibit writing to Flash)
01 program security bit 2 (inhibit Flash verify)
02 program security bit 3 (disable external memory)
Example:
:020000030501F5 program security bit 2
Subfunction Code = 06 (Program Status Byte or Boot Vector)
ff = 06
ss = 00 program status byte
01 program boot vector
Example:
:030000030601FCF7 program boot vector with 0FCH
Subfunction Code = 07 (Full Chip Erase)
Erases all blocks, security bits, and sets status and boot vector to default values
ff = 07
ss = don’t care
dd = don’t care
Example:
:0100000307F5 full chip erase
04
Display Device Data or Blank Check – Record type 04 causes the contents of the entire Flash array to be sent out
the serial port in a formatted display. This display consists of an address and the contents of 16 bytes starting with that
address. No display of the device contents will occur if security bit 2 has been programmed. Data to the serial port is
initiated by the reception of any character and terminated by the reception of any character.
General Format of Function 04
:05xxxx04sssseeeeffcc
Where:
05
xxxx
04
ssss
eeee
ff
= number of bytes (hex) in record
= required field, but value is a “don’t care”
= “Display Device Data or Blank Check” function code
= starting address
= ending address
= subfunction
00 = display data
01 = blank check
= checksum
cc
Example:
:0500000440004FFF0069 display 4000–4FFF
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