P89CV51RB2FBC datasheet(21/73 Pages) NXP

21 / 73 page

P89CV51RB2_RC2_RD2_1

Product data sheet

Rev. 01 — 5 October 2007

21 of 73

NXP Semiconductors

P89CV51RB2/RC2/RD2

80C51 with 1 kB RAM, SPI

Display device data or blank check

:05xxxx04sssseeeeffcc

Where

05 = number of bytes in the record

xxxx = required ﬁeld but value is a don’t care

04 = function code for display or blank check

ssss = starting address, MSB ﬁrst

eeee = ending address, MSB ﬁrst

ff = subfunction

00 = display data

01 = blank check

cc = checksum

Subfunction codes:

Example:

:0500000400001FFF00D9 (display from 0000H to 1FFFH)

Miscellaneous read functions

:02xxxx05ffsscc

Where:

02 = number of bytes in the record

xxxx = required ﬁeld but value is a don’t care

05 = function code for miscellaneous read

ffss = subfunction and selection code

0000 = read manufacturer ID

0001 = read device ID 1

0002 = read device ID 2

0003 = read 6

×/12× bit (bit 7 = 1 is 6×, bit 7 = 0 is 12×)

0080 = read boot code version

0700 = read security bits

0701 = read status bit

0702 = read boot vector

cc = checksum

Example:

:020000050000F9 (display manufacturer ID)

Direct load of baud rate

:02xxxx06HHLLcc

Where:

02 = number of bytes in the record

xxxx = required ﬁeld but value is a don’t care

HH = high byte of timer T2

LL = low byte of timer T2

cc = checksum

Example:

:02000006FFFFcc (load T2 = FFFF)

Table 11.

ISP Hex record formats …continued

Record type

Command/data function

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