8.10 System Write: $B4

Figure 8-11. System Write Command Functional Description

The System Write command allows writing of configuration data to the device. Depending on the value of the Address 1 parameter, the host may write data to the Configuration zone, program the fuses, or set the user zone.

Table 8-3. System Write Command Detail

Command Description

Command

Addr 1

Addr 2

N

Data(N)

Write Config Zone

$B4

$00

Addr

N ≤ $10

N bytes

Write Fuses

$B4

$01

Fuse ID

$00

Send Checksum

$B4

$02

$00

$02

2 bytes

Set User Zone

$B4

$03

Zone

$00