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參數(shù)資料
| 型號： | 25C640 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 64K SPI Bus Serial EEPROM |
| 中文描述： | 64K的SPI總線串行EEPROM |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 196K |
| 代理商： | 25C640 |
25AA640/25LC640/25C640
DS21223A-page 2
Preliminary
1997 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
1.1
Maximum Ratings*
Vcc...................................................................................7.0V
All inputs and outputs w.r.t. Vss..................-0.6V to Vcc+1.0V
Storage temperature ....................................... -65C to 150C
Ambient temperature under bias..................... -65C to 125C
Soldering temperature of leads (10 seconds).............+300C
ESD protection on all pins.................................................4kV
*Notice:
cause permanent damage to the device. This is a stress rating only and
functional operation of the device at those or any other conditions
above those indicated in the operational listings of this specification is
not implied. Exposure to maximum rating conditions for an extended
period of time may affect device reliability
Stresses above those listed under ‘Maximum ratings’ may
TABLE 1-1:
PIN FUNCTION TABLE
FIGURE 1-1:
AC TEST CIRCUIT
1.2
AC Test Conditions
Name
Function
CS
SO
SI
SCK
WP
V
SS
V
CC
HOLD
Chip Select Input
Serial Data Output
Serial Data Input
Serial Clock Input
Write Protect Pin
Ground
Supply Voltage
Hold Input
AC Waveform:
V
LO
V
HI
V
HI
Timing Measurement Reference Level
Input
Output
Note 1:
For V
CC
≤
4.0V
2:
For V
CC
> 4.0V
= 0.2V
= V
= 4.0V
CC
- 0.2V
(Note 1)
(Note 2)
0.5 V
0.5 V
CC
CC
V
CC
SO
100 pF
1.8 K
2.25 K
TABLE 1-2:
DC CHARACTERISTICS
All parameters apply over the
specified operating ranges
unless otherwise noted.
Commercial (C): Tamb = 0
Industrial (I):
Automotive (E):
°
C to +70
°
C to +85
°
C to +125
°
C
V
V
V
CC
CC
CC
= 1.8V to 5.5V
= 1.8V to 5.5V
= 4.5V to 5.5V (25C640 only)
Tamb = -40
Tamb = -40
°
C
°
C
Parameter
Symbol
Min
Max
Units
Test Conditions
High level input voltage
V
V
V
V
V
V
V
IH
1
2
1
2
2.0
V
V
CC
+1
+1
V
V
V
V
V
V
V
μ
μ
pF
V
V
V
V
I
OL
I
OL
I
OH
CS = V
CS = V
T
AMB
V
CC
V
CC
V
CC
V
CC
V
CC
CS = Vcc = 5.5V, Inputs tied to V
CS = Vcc = 2.5V, Inputs tied to V
CC
≥
< 2.7V (Note)
≥
2.7V (Note)
< 2.7V (Note)
= 2.1 mA
= 1.0 mA, V
=-400
μ
, V
, V
= 25C, CLK = 1.0 MHz,
= 5.0V (Note)
= 5.5V; F
CLK
= 2.5V; F
CLK
= 5.5V
= 2.5V
2.7V (Note)
IH
0.7 V
-0.3
-0.3
—
—
V
CC
-10
-10
CC
CC
CC
Low level input voltage
IL
0.8
CC
IL
0.3 V
0.4
0.2
CC
CC
Low level output voltage
OL
OL
CC
< 2.5V
High level output voltage
Input leakage current
Output leakage current
Internal Capacitance
(all inputs and outputs)
OH
-0.5
—
10
10
7
A
I
LI
A
A
CC
IN
= V
= V
SS
TO
V
CC
I
LO
CC
OUT
SS
TO
V
CC
C
INT
—
Operating Current
I
CC
Read
—
—
—
—
—
—
1
500
5
3
5
1
mA
μ
A
mA
mA
μ
A
μ
A
=3.0 MHz; SO = Open
=2.0 MHz; SO = Open
I
CC
Write
Standby Current
I
CCS
CC
CC
or V
or V
SS
SS
Note:
This parameter is periodically sampled and not 100% tested.
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