st93c46a STMicroelectronics, st93c46a Datasheet - Page 4

• Manufacturer Part Number: st93c46a
• Description: 1k 64 X 16 Or 128 X 8 Serial Microwire Eeprom
• Manufacturer: STMicroelectronics

ST93C46A/46C/46T, ST93C47C/47T
Table 5. AC Characteristics
(T
Notes: 1. Chip Select must be brought low for a minimum of 250 ns (t
Figure 4. Synchronous Timing, Start and Op-Code Input
4/13
Symbol
A
t
t
t
t
t
t
t
t
t
t
t
t
t
SHCH
DVCH
CHDX
CHQL
CHQV
SHQV
CLSH
SLCH
SLSH
SLQZ
CHCL
CLCH
= 0 to 70 C or –40 to 85 C; V
CLSL
t
f
W
C
2. The Clock frequency specification calls for a minimum clock period of 1 s, therefore the sum of the timings t
must be greater or equal to 1 s. For example, if t
t
t
t
t
t
t
t
t
t
t
Alt
CSH
t
t
t
f
CSS
SKS
PD0
PD1
SKH
SKL
DIS
DIH
CS
WP
SV
DF
SK
C
S
D
Chip Select High to Clock High
Clock Low to Chip Select High
Input Valid to Clock High
Clock High to Input Transition
Clock High to Output Low
Clock High to Output Valid
Clock Low to Chip Select Low
Chip Select Low to Clock High
Chip Select Low to Chip Select High
Chip Select High to Output Valid
Chip Select Low to Output Hi-Z
Clock High to Clock Low
Clock Low to Clock High
Erase/Write Cycle time
Clock Frequency
Parameter
CC
= 4.5V to 5.5V or 3V to 5.5V)
tCLSH
START
START
CHCL
tSHCH
tDVCH
is 250 ns, then t
SLSH
) between consecutive instruction cycles.
OP CODE
Temp. Range: grade 1
ST93C46C, 47C
Test Condition
Temp. Range:
CLCH
OP CODE INPUT
grades 3, 6
ST93C46A
Note 1
Note 2
Note 2
must be at least 750 ns.
tCHCL
OP CODE
tCLCH
Min
100
100
100
200
250
250
250
250
50
0
0
AI01428
tCHDX
CHCL
Max
500
500
500
300
200
10
1
+ t
CLCH
MHz
Unit
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns