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PDF S29630A Data sheet ( Hoja de datos )
| Número de pieza | S29630A | |
| Descripción | CMOS Serial EPROM | |
| Fabricantes | Seiko Instruments | |
| Logotipo |  |
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Contents
Features.............................................................. 1
Pin Assignment ................................................... 1
Pin Functions ...................................................... 1
Block Diagram..................................................... 2
Instruction Set ..................................................... 2
Absolute Maximum Ratings................................. 2
Recommended Operating Conditions ................. 3
Pin Capacitance .................................................. 3
Endurance........................................................... 3
DC Electrical Characteristics............................... 4
AC Electrical Characteristics ............................... 5
Operation ............................................................ 6
Receiving a Start-Bit ........................................... 10
Three-wire Interface (DI-DO direct connection)... 10
Dimensions (Unit:mm)......................................... 11
Ordering Information .......................................... 12
Characteristics .................................................... 13
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1 page  
CMOS SERIAL E2PROM
S-29530A / 29630A
DC Electrical Characteristics
Table 7
Parameter
Current
consumption
(READ)
Current
consumption
(PROGRAM)
Smbl
Conditions
VCC=4.5 V to 5.5 V VCC=2.5 V to 4.5 V VCC=1.8 to 2.5 V
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
ICC1 DO unloaded 1.2 0.5 0.4
ICC2 DO unloaded 5.0 2.0 1.5
Unit
mA
mA
Table 8
Parameter Smbl
Conditions
Standby current
consumption
Input leakage
current
Output leakage
current
Low level output
voltage
High level output
voltage
Write enable latch
data hold voltage
CS=GND DO=Open
ISB Connected to VCC or GND
ILI VIN=GND to VCC
ILO VOUT=GND to VCC
VOL CMOS IOL= 100A
CMOS
VOH Vcc=2.5 to 5.5V:IOH= -100A
Vcc=1.8 to 2.5V:IOH= -10A
Only when write
VDH disable mode
VCC=4.5 V to 5.5 V
Min. Typ. Max.
1.0
VCC=2.5 to 4.5 V
Min. Typ. Max.
1.0
VCC=1.8 to 2.5 V
Min. Typ. Max.
1.0
0.1 1.0 0.1 1.0 0.1 1.0
0.1 1.0 0.1 1.0 0.1 1.0
0.1 0.1
VCC-0.7 VCC-0.7 VCC-0.3
1.5 1.5 1.5
Unit
A
A
A
V
V
V
4
5 Page 
CMOS SERIAL E2PROM
S-29530A / 29630A
Receiving a Start-Bit
A start bit can be recognized by latching the high level of DI at the rising edge of SK after changing CS to high (Start-
bit Recognition). The write operation begins by inputting the write instruction and setting CS to low. The DO pin then
outputs low during the write operation and high at its completion by setting CS to high (Verify Operation). Therefore, only
after a write operation, in order to accept the next command by having CS go high, the DO pin switch from a state of high-
impedence to a state of data output; but if it recognizes a start-bit, the DO pin returns to a state of high-impedence (see
Figure 3).
Three-wire Interface (DI-DO direct connection)
Although the normal configuration of a serial interface is a 4-wire interface to CS, SK, DI, and DO, a 3-wire interface is
also a possibility by connecting DI and DO. However, since there is a possibility that the DO output from the serial
memory IC will interfere with the data output from the CPU with a 3-wire interface, install a resistor between DI and DO in
order to give preference to data output from the CPU to DI(See Figure 12).
CPU
S-29530A / 29630A
SIO DI
DO
R : 10 to 100 k
Figure 12
10
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet S29630A.PDF ] | |
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