The Flash Chip Commands - FIGnition FUZE Hardware Reference Manual

5.2.3 The Flash Chip Commands

FIGnition only uses some of the Flash chip's commands:
Cmd
RDID (Read Device
Code)
READ (Read bytes)
PP (Page Program)
SE (Sector Erase)
The Flash chip itself is organised as a set of 2048 (or 4096) x 256b pages. Bits within
pages can be programmed from 1s to 0s. Eight pages at a time are grouped into sectors,
so there are 128 (or 256) x 4096b sectors [Fig 5.5]. Erasing must be performed on a whole
4Kb sector at a time changing all the bits to 1s.
Fig 5.4a (Master sending $4B to device)
Fig 5.4b (Device sending $CA to Master)
Code
$9F
$03
$02
$D8
Address Bytes
0
3 (The most sig-
nificant byte
comes first)
3
3
Data Bytes
4
1 or more... (data bytes
read in from the Flash
chip)
1 or more... (data bytes
sent out from the Flash
chip)