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PDF M95256-RMN1T Data sheet ( Hoja de datos )

Número de pieza M95256-RMN1T
Descripción 256/128 Kbit Serial SPI Bus EEPROM With High Speed Clock
Fabricantes ST Microelectronics 
Logotipo ST Microelectronics Logotipo



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M95256
M95128
256/128 Kbit Serial SPI Bus EEPROM
With High Speed Clock
PRELIMINARY DATA
s SPI Bus Compatible Serial Interface
s Supports Positive Clock SPI Modes
s 5 MHz Clock Rate (maximum)
s Single Supply Voltage:
– 4.5V to 5.5V for M95xxx
– 2.7V to 3.6V for M95xxx-V
– 2.5V to 5.5V for M95xxx-W
– 1.8V to 3.6V for M95xxx-R
s Status Register
s Hardware and Software Protection of the Status
Register
s BYTE and PAGE WRITE (up to 64 Bytes)
s Self-Timed Programming Cycle
s Resizeable Read-Only EEPROM Area
s Enhanced ESD Protection
s 100,000 Erase/Write Cycles (minimum)
s 40 Year Data Retention (minimum)
DESCRIPTION
These SPI-compatible electrically erasable
programmable memory (EEPROM) devices are
organized as 32K x 8 bits (M95256) and 16K x 8
bits (M95128), and operate down to 2.7 V (for the
8
1
PSDIP8 (BN)
0.25 mm frame
8
1
SO8 (MN)
150 mil width
Figure 1. Logic Diagram
VCC
14
1
TSSOP14 (DL)
169 mil width
8
1
SO8 (MW)
200 mil width
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
D
C
S
W
HOLD
M95xxx
VSS
Q
AI01789C
March 2000
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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M95256-RMN1T pdf
Figure 5. Hold Condition Activation
CLOCK
HOLD PIN
MEMORY
STATUS
ACTIVE
HOLD
ACTIVE
Figure 6. Block Diagram
HOLD
W
S
C
D
Q
Control Logic
I/O Shift Register
High Voltage
Generator
Address Register
and Counter
Data
Register
An - 63
M95256, M95128
HOLD
ACTIVE
AI02029B
Status
Register
An
Size of the
Read only
area of the
EEPROM
0000h
64 Bytes
X Decoder
003Fh
Note: 1. The cell An represents the byte at the highest address in the memory
AI02030B
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M95256-RMN1T arduino
M95256, M95128
Table 11. DC Characteristics
(TA = 0 to 70 °C, –40 to 85 °C or –40 to 125 °C; VCC = 4.5 to 5.5 V)
(TA = 0 to 70 °C or –40 to 85 °C; VCC = 2.7 to 3.6 V)
(TA = 0 to 70 °C or –40 to 85 °C; VCC = 2.5 to 5.5 V)
(TA = 0 to 70 °C or –20 to 85 °C; VCC = 1.8 to 3.6 V)
Symbol
Parameter
Voltage Temp.
Range Range
Test Condition
Min.
ILI
Input Leakage
Current
all all
ILO
Output Leakage
Current
all
all
4.5-5.5
6
C = 0.1 VCC/0.9. VCC at 5 MHz,
VCC = 5 V, Q = open
4.5-5.5
ICC Supply Current
2.7-3.6
3
6
C = 0.1 VCC/0.9. VCC at 2 MHz,
VCC = 5 V, Q = open
C = 0.1 VCC/0.9. VCC at 5 MHz,
VCC = 2.7 V, Q = open
2.5-5.5
6
C = 0.1 VCC/0.9. VCC at 2 MHz,
VCC = 2.5 V, Q = open
1.8-3.6
5
C = 0.1 VCC/0.9. VCC at 1 MHz,
VCC = 1.8 V, Q = open
4.5-5.5 6 S = VCC, VIN = VSS or VCC , VCC = 5 V
ICC1
Supply Current
(Stand-by)
4.5-5.5
2.7-3.6
3 S = VCC, VIN = VSS or VCC , VCC = 5 V
6 S = VCC, VIN = VSS or VCC , VCC = 2.7 V
2.5-5.5
6 S = VCC, VIN = VSS or VCC , VCC = 2.5 V
1.8-3.6
5 S = VCC, VIN = VSS or VCC , VCC = 1.8 V
VIL
Input Low
Voltage
all all
– 0.3
VIH
Input High
Voltage
all all
0.7 VCC
4.5-5.5
6
IOL = 2 mA, VCC = 5 V
VOL1
Output Low
Voltage
4.5-5.5
2.7-3.6
3
6
IOL = 2 mA, VCC = 5 V
IOL = 1.5 mA, VCC = 2.7 V
2.5-5.5
6
IOL = 1.5 mA, VCC = 2.5 V
1.8-3.6
5
IOL = 0.15 mA, VCC = 1.8 V
4.5-5.5
6
IOH = –2 mA, VCC = 5 V
0.8 VCC
VOH1
Output High
Voltage
4.5-5.5
2.7-3.6
3
6
IOH = –2 mA, VCC = 5 V
IOH = –0.4 mA, VCC = 2.7 V
0.8 VCC
0.8 VCC
2.5-5.5
6
IOH = –0.4 mA, VCC = 2.5 V
0.8 VCC
1.8-3.6
5
IOH = –0.1 mA, VCC = 1.8 V
0.8 VCC
Note: 1. For all 5V range devices, the device meets the output requirements for both TTL and CMOS standards.
Max. Unit
± 2 µA
± 2 µA
4 mA
4 mA
3 mA
2 mA
2 mA
10 µA
20 µA
2 µA
2 µA
1 µA
0.3 VCC V
VCC+1
0.4
0.4
0.4
0.4
0.3
V
V
V
V
V
V
V
V
V
V
V
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