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): 66/89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
66
The ISP facility was designed so that specific crystal frequencies
were not required in order to generate baud rates or time the
programming pulses. The user thus needs to provide the
P89C660/662/664/668 with information required to generate the
proper timing. Record type 02 is provided for this purpose.
Table 14.
Intel-Hex Records Used by In-System Programming
RECORD TYPE
COMMAND/DATA FUNCTION
00
Program Data
:nnaaaa00dd....ddcc
Where:
Nn
Aaaa
dd....dd
cc
Example:
:10008000AF5F67F0602703E0322CFA92007780C3FD
= number of bytes (hex) in record
= memory address of first byte in record
= data bytes
= checksum
01
End of File (EOF), no operation
:xxxxxx01cc
Where:
xxxxxx
cc
Example:
:00000001FF
= required field, but value is a “don’t care”
= checksum
02
Specify Oscillator Frequency
:01xxxx02ddcc
Where:
xxxx
dd
cc
Example:
:0100000210ED (dd = 10h = 16, used for 16.0–16.9 MHz)
= required field, but value is a “don’t care”
= integer oscillator frequency rounded down to nearest MHz
= checksum
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