m29f200t STMicroelectronics, m29f200t Datasheet - Page 17

• Manufacturer Part Number: m29f200t
• Description: 2 Mbit 256kb X8 Or 128kb X16, Boot Block Single Supply Flash Memory
• Manufacturer: STMicroelectronics

Table 15A. Write AC Characteristics, Write Enable Controlled
(T
Notes: 1. Sample only, not 100% tested.
POWER SUPPLY
Power Up
The memory Command Interface is reset on power
up to Read Array. Either E or W must be tied to V
during Power Up to allow maximum security and
the possibility to write a command on the first rising
edge of E and W. Any write cycle initiation is
blocked when Vcc is below V
t
PHPHH
Symbol
A
t
t
WHRL
PHWL
t
t
t
t
t
t
t
t
t
t
t
VCHEL
WHGL
t
t
WLWH
DVWH
WHDX
WHEH
WHWL
WLAX
GHWL
= 0 to 70 C, –40 to 85 C or –40 to 125 C)
ELWL
AVWL
AVAV
PLPX
2. This timing is for Temporary Block Unprotection operation.
(1,2)
(1)
(1)
t
t
t
t
t
BUSY
t
t
Alt
t
t
t
t
t
WPH
t
OEH
VIDR
t
t
VCS
RSP
WC
WP
CS
DS
DH
CH
AS
AH
RP
Address Valid to Next Address Valid
Chip Enable Low to Write Enable Low
Write Enable Low to Write Enable High
Input Valid to Write Enable High
Write Enable High to Input Transition
Write Enable High to Chip Enable High
Write Enable High to Write Enable Low
Address Valid to Write Enable Low
Write Enable Low to Address Transition
Output Enable High to Write Enable Low
V
Write Enable High to Output Enable Low
RP Rise Time to V
RP Pulse Width
Program Erase Valid to RB Delay
RP High to Write Enable Low
CC
High to Chip Enable Low
LKO
.
Parameter
ID
IH
Supply Rails
Normal precautions must be taken for supply volt-
age decoupling; each device in a system should
have the V
close to the V
widths should be sufficient to carry the V
gram and erase currents required.
Min
500
500
55
30
25
20
45
50
High Speed
0
0
0
0
0
0
4
Interface
CC
-55
M29F200T / M29F200B
rail decoupled with a 0.1 F capacitor
CC
Max
30
and V
M29F200T, M29F200B
SS
Min
500
500
70
35
30
20
45
50
0
0
0
0
0
0
4
pins. The PCB trace
Standard
Interface
-70
Max
30
CC
Unit
17/33
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
pro-
s
s