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PDF ST95P08 Data sheet ( Hoja de datos )

Número de pieza ST95P08
Descripción 8 Kbit Serial SPI EEPROM with Positive Clock Strobe
Fabricantes ST Microelectronics 
Logotipo ST Microelectronics Logotipo



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No Preview Available ! ST95P08 Hoja de datos, Descripción, Manual

ST95P08
8 Kbit Serial SPI EEPROM with Positive Clock Strobe
1 MILLION ERASE/WRITE CYCLES
40 YEARS DATA RETENTION
SINGLE 3V to 5.5V SUPPLY VOLTAGE
SPI BUS COMPATIBLE SERIAL INTERFACE
2 MHz CLOCK RATE MAX
BLOCK WRITE PROTECTION
STATUS REGISTER
16 BYTE PAGE MODE
WRITE PROTECT
SELF-TIMED PROGRAMMING CYCLE
E.S.D.PROTECTION GREATER than 4000V
SUPPORTS POSITIVE CLOCK SPI MODES
8
1
PSDIP8 (B)
0.25mm Frame
8
1
SO8 (M)
150mil Width
DESCRIPTION
The ST95P08 is an 8 Kbit Electrically Erasable
Programmable Memory (EEPROM) fabricated with
STMicroelectronics’s High Endurance Single
Polysilicon CMOS technology. The 8 Kbit memory
is organised as 64 pages of 16 bytes. The memory
is accessed by a simple SPI bus compatible serial
interface. The bus signals are a serial clock input
(C), a serial data input (D) and a serial data output
(Q). The device connected to the bus is selected
when the chip select input (S) goes low. Commu-
nications with the chip can be interrupted with a
hold input (HOLD). The write operation is disabled
by a write protect input (W).
Table 1. Signal Names
C Serial Clock
D Serial Data Input
Q Serial Data Output
S Chip Select
W Write Protect
HOLD
Hold
VCC Supply Voltage
VSS Ground
Figure 1. Logic Diagram
VCC
D
C
S
W
HOLD
ST95P08
VSS
February 1999
Q
AI01315
1/16

1 page




ST95P08 pdf
ST95P08
Table 6. AC Characteristics
(TA = 0 to 70°C or –40 to 85°C; VCC = 3V to 5.5V)
Symbol
Alt
Parameter
Test Condition
Min Max Unit
fC fC Clock Frequency
D.C. 2 MHz
tSLCH
tSU S Setup Time
50 ns
tCLSH
tSH S Hold Time
50 ns
tCH tWH Clock High Time
200 ns
tCL tWL Clock Low Time
300 ns
tCLCH
tRC Clock Rise Time
1 µs
tCHCL
tFC Clock Fall Time
1 µs
tDVCH
tDSU Data In Setup Time
50 ns
tCHDX
tDH Data In Hold Time
50 ns
tDLDH
tRI Data In Rise Time
1 µs
tDHDL
tFI Data In Fall Time
1 µs
tHXCH
tHSU HOLD Setup Time
50 ns
tCLHX
tHH HOLD Hold Time
50 ns
tSHSL
tCS S Deselect Time
4.5V < VCC < 5.5V
3V < VCC < 4.5V
200
250
ns
ns
tSHQZ
tDIS Output Disable Time
150 ns
tQVCL
tV Clock Low to Output Valid
300 ns
tCLQX
tHO Output Hold Time
0 ns
tQLQH
tRO Output Rise Time
100 ns
tQHQL
tFO Output Fall Time
100 ns
tHHQX
tLZ HOLD High to Output Low-Z
150 ns
tHLQZ
tHZ HOLD Low to Output High-Z
150 ns
tW (1)
tW Write Cycle Time
10 ms
Note: 1. Not enough characterisation data were available on this parameter at the time of issue this Data Sheet. The typical value is well
below 5ms, the maximum value will be reviewed and lowered when sufficient data is available.
5/16

5 Page





ST95P08 arduino
Figure 11. Page Write Operation Sequence
ST95P08
S
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
C
INSTRUCTION
BYTE ADDRESS
DATA BYTE 1
D
A9 A8
A7 A6 A5 A4 A3 A2 A1 A0 7 6 5 4 3 2 1 0 7
S
24 25 26 27 28 29 30 31
C
DATA BYTE 2
DATA BYTE N
DATA BYTE 16
D 765432107654321076543210
AI01320
Figure 12. RDSR: Read Status Register Sequence
S
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
C
INSTRUCTION
D
STATUS REG. OUT
HIGH IMPEDANCE
Q 76543210
MSB
AI01431
11/16

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