HCSXXX Datasheet, PDF (16/28 Pages) Microchip Technology – Memory Programming Specification

HCSXXX
4.1 Programming Flow Charts
FIGURE 4-4:
PROGRAMMING FLOW
CHART 1
Start
Set VDD =
5.0V ± 10%
Send Start
Sequence
Device
Bulk Erase
Load 16-Bits
of Data
Wait TWC or
Poll Rising
Pulse
No All Locations
Programmed?
Yes
Begin Verify
Read 16-Bits
of Data
All Locations ^No
Verified?
Yes
Program/Verify
Complete
Note:
Applies to HCS200, HCS201, HCS300,
HCS301, HCS320, HCS362, HCS410
and HCS412 only.
FIGURE 4-5:
PROGRAMMING FLOW
CHART 2
Start
Set VDD =
5.0V ± 10%
Send Start
Sequence
If Data Bit 0 = 0
Then S1 = 0
Else S1 = 1
Load 16 Bits
of Data
(LSb first)
Load 16 Bits of
Complemented
Data
(LSb first)
Wait TWC or
Poll Calibration
Pulse
No All Locations
Programmed?
Yes
Begin Verify
Read 16-Bits
of Data
All Locations ^No
Verified?
Yes
Program/Verify
Complete
Note: Applies to HCS360 and HCS361 only.
DS41256A-page 16
Preliminary
 2004 Microchip Technology Inc.