Philips UM10109 User Manual
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
User manual
Rev. 02 — 23 May 2005
111 of 133
Philips Semiconductors
UM10109
P89LPC932A1 User manual
•
Write the address of the next byte to be programmed to FMADRL, if desired. (Not
needed for contiguous bytes since FMADRL is auto-incremented). All bytes to be
programmed must be within the same page.
needed for contiguous bytes since FMADRL is auto-incremented). All bytes to be
programmed must be within the same page.
•
Write the data for the next byte to be programmed to FMDATA.
•
Repeat writing of FMADRL and/or FMDATA until all desired bytes have been loaded
into the page register.
into the page register.
•
Write the page address in user code memory to FMADRH and FMADRL[7:6], if not
previously included when writing the page register address to FMADRL[5:0].
previously included when writing the page register address to FMADRL[5:0].
•
Write the erase-program command (68H) to FMCON, starting the erase-program
cycle.
cycle.
•
Read FMCON to check status. If aborted, repeat starting with the LOAD command.
An assembly language routine to load the page register and perform an erase/program
operation is shown below.
operation is shown below.
;**************************************************
;* pgm user code *
;**************************************************
;*
*
;* Inputs:
*
;* R3 = number of bytes to program (byte)
*
;* R4 = page address MSB(byte)
*
Table 94:
Flash Memory Control register (FMCON - address E4h) bit allocation
Bit
7
6
5
4
3
2
1
0
Symbol (R)
-
-
-
-
HVA
HVE
SV
OI
Symbol (W) FMCMD.7
FMCMD.6
FMCMD.5
FMCMD.4
FMCMD.3
FMCMD.2
FMCMD.1
FMCMD.0
Reset
0
0
0
0
0
0
0
0
Table 95:
Flash Memory Control register (FMCON - address E4h) bit description
Bit Symbol
Access
Description
0
OI
R
Operation interrupted. Set when cycle aborted due to an interrupt or reset.
FMCMD.0
W
Command byte bit 0.
1
SV
R
Security violation. Set when an attempt is made to program, erase, or CRC a secured sector or
page.
page.
FMCMD.1
W
Command byte bit 1
2
HVE
R
High voltage error. Set when an error occurs in the high voltage generator.
FMCMD.2
W
Command byte bit 2.
3
HVA
R
High voltage abort. Set if either an interrupt or a brown-out is detected during a program or
erase cycle. Also set if the brown-out detector is disabled at the start of a program or erase
cycle.
erase cycle. Also set if the brown-out detector is disabled at the start of a program or erase
cycle.
FMCMD.3
W
Command byte bit 3.
4:7
-
R
reserved
4:7
FMCMD.4
W
Command byte bit 4.
4:7
FMCMD.5
W
Command byte bit 5.
4:7
FMCMD.6
W
Command byte bit 6.
4:7
FMCMD.7
W
Command byte bit 7.