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Número de pieza | S29255A | |
Descripción | CMOS 2K / 4K Bit Serial EPROM | |
Fabricantes | Seiko | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de S29255A (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
No Preview Available ! Contents
Features........................................................... 1
Pin Assignment ................................................ 1
Block Diagram.................................................. 1
Instruction Set .................................................. 2
Absolute Maximum Ratings ............................. 2
Recommended Operating Conditions.............. 2
Rewriting Times ............................................... 2
Pin Capacitance............................................... 3
DC Electrical Characteristics ........................... 3
AC Electrical Characteristics............................ 4
Operation ......................................................... 5
Three-wire Interface
·DI-DO Direct Connecting ...................... 8
Dimensions ...................................................... 8
Ordering Information ........................................ 9
Characteristics ............................................... 10
Frequently Asked Questions..........................14
1 page CMOS 2K/4K-bit SERIAL E2PROM
S-29255A/29355A
AC Electrical Characteristics
Table 8 Measuring conditions
Input pulse voltage
0.1×VCC to 0.9×VCC
Output reference voltage
0.5×VCC
Output load
100 pF
Parameter
CS setup time
CS hold time
CS setup time (CPU)
CS hold time (CPU)
CS deselect time
Data setup time
Data hold time
1 data output delay
0 data output delay
Clock frequency
Clock pulse width
Output disable time
Program time
Symbol
tCSS
tCSH
tCSS(CPU)
tCSH(CPU)
tCDS
tDS
tDH
tPD1
tPD0
fSK
tSKH, tSKL
tHZ
tPR
Table 9
Read / Write operations
VCC=5.0 V±10 %
VCC=2.7 to 6.5 V
Min. Typ. Max. Min. Typ. Max.
0.2 0.4
0.2 0.4
0.2 0.4
0.2 0.4
0.4 1.0
0.2 0.4
0.2 0.4
0.4 1.0
0.4 1.0
0.0 2.0 0.0 1.0
0.25 0.5
0 50 150 0 500 1000
4.0 10 4.0 10
(Ta=-40°C to 85°C)
Read operation Unit
VCC=1.8 to 2.7 V
Min. Typ. Max.
1.0 µs
1.0 µs
1.0 µs
1.0 µs
2.0 µs
0.8 µs
0.8 µs
2.0 µs
2.0 µs
0.0 0.2 MHz
2.5 µs
ns
ms
CS
tCSS
tSKH
tSKL
SK
tCSH
tCDS
tDS tDH
DI Valid data
Valid data
tPD0
tPD1
DO
Input data is fetched at the rise of SK.
Output data is triggered at the fall of SK.
Figure 3 Timing chart
CS
tCSS(CPU)
SK
tCSH(CPU)
Figure 4 Timing chart of tCSS(CPU) and tCSH(CPU) when connected to CPU
4 Seiko Instruments Inc.
5 Page CMOS 2K/4K-bit SERIAL E2PROM
S-29255A/29355A
Characteristics
1. DC characteristics
1.1 Current consumption (READ) ICC1 -
Ambient temperature Ta
1.0
ICC1
(mA)
0.5
VCC=5.5V
fSK=2 MHz
DATA=0101
1.2 Current consumption (READ) ICC1 -
Ambient temperature Ta
0.4
ICC1
(mA)
0.2
VCC=3.3V
fSK=1MHz
DATA=0101
0
-40
0
Ta (°C)
85
1.3 Current consumption (READ) ICC1 -
Power supply voltage VCC
1.0
ICC1
(mA)
0.5
Ta=25°C
fSK=1 MHz
DATA=0101
0
-40
0
Ta (°C)
85
1.4 Current consumption (READ) ICC1 -
Clock frequency fSK
VCC=5.0V
Ta=25°C
1.0
ICC1
(mA)
0.5
0
234567
VCC (V)
1.5 Current consumption (PROGRAM) ICC2 -
Ambient temperature Ta
VCC=5.5V
Continuous PROGRAM mode
DATA 0101
4.0
ICC2
(mA)
2.0
0
10K
100K 1M 2M
fSK (Hz)
1.6 Current consumption (PROGRAM) ICC2 -
Ambient temperature Ta
VCC=3.3V
Continuous PROGRAM mode
DATA 0101
1.0
ICC2
(mA)
0.5
0
-40
0
Ta (°C)
85
1.7 Current consumption (PROGRAM) ICC2 -
Power supply voltage VCC
Ta=25°C
DATA 0101
4.0
ICC2
(mA)
2.0
0
234567
VCC (V)
0
-40
0
Ta (°C)
85
1.8 Standby current consumption ISB -
Ambient temperature Ta
10-6
10-7
ISB 10-8
(A) 10-9
10-10
10-11
VCC=6.5V
-40 0
Ta (°C)
85
10 Seiko Instruments Inc.
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet S29255A.PDF ] |
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