P89C660 Philips Semiconductors, P89C660 Datasheet - Page 66

• Manufacturer Part Number: P89C660
• Description: 80C51 8-bit Flash microcontroller family
• Manufacturer: Philips Semiconductors

Philips Semiconductors
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
Table 14. Intel-Hex Records Used by In-System Programming
2002 Oct 28
RECORD TYPE
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/1KB/2KB/8KB RAM
00
01
02
Program Data
Where:
Example:
End of File (EOF), no operation
Where:
Example:
Specify Oscillator Frequency
Where:
Example:
:nnaaaa00dd....ddcc
Nn
Aaaa
dd....dd
cc
:10008000AF5F67F0602703E0322CFA92007780C3FD
:xxxxxx01cc
xxxxxx
cc
:00000001FF
:01xxxx02ddcc
xxxx
dd
cc
:0100000210ED
= number of bytes (hex) in record
= memory address of first byte in record
= data bytes
= checksum
= required field, but value is a “don’t care”
= checksum
= required field, but value is a “don’t care”
= integer oscillator frequency rounded down to nearest MHz
= checksum
(dd = 10h = 16, used for 16.0–16.9 MHz)
COMMAND/DATA FUNCTION
66
P89C660/662/664/668 with information required to generate the
proper timing. Record type 02 is provided for this purpose.
P89C660/P89C662/P89C664/
P89C668
Product data