Lucent Technologies MN10285K - Manual (Page 327)

MN102HF75K Flash EEPROM Version
Using the Onboard Serial Programming Mode
Panasonic Semiconductor Development Company MN102H75K/F75K/85K/F85K LSI User Manual
326
Panasonic
■ Start routine for the load program
Conditions:
1.
After the load program initiates a reset start, SBD must be low and SBT
high.
2. After the program waits t
WAIT1
= 10 milliseconds, SBD must still be low and
SBT high.
3. Within t
WAIT2
= 100 milliseconds, both SBD and SBT must be high.
If any of these conditions is not met, control returns to the user program.
Figure B-9 Load Program Start Flow
SBT pin == high
&&
SDB pin == low?
Yes
No
Wait t
WAIT1
SBT pin == high
&&
SDB pin == low?
Yes
No
Has t
WAIT2
passed?
No
SBT pin == high
&&
SDB pin == high?
Yes
No
Yes
Reset start
Start serial writer
load program
Execute user
program