st93c46a STMicroelectronics, st93c46a Datasheet

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st93c46a

Manufacturer Part Number
st93c46a
Description
1k 64 X 16 Or 128 X 8 Serial Microwire Eeprom
Manufacturer
STMicroelectronics
Datasheet

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DESCRIPTION
This specification covers a range of 1K bit serial
EEPROM products, the ST93C46A,46C,46T
specified at 5V 10% and the ST93C47C,47T
specified at 3V to 5.5V.
In the text, products are referred to as ST93C46.
The ST93C46 is a 1K bit Electrically Erasable
Programmable Memory (EEPROM) fabricated with
SGS-THOMSON’s High EnduranceSingle Polysili-
con CMOS technology. The memory is accessed
through a serial input (D) and output (Q).
Table 1. Signal Names
June 1997
This is information on a product still in production bu t not recommended for new de signs.
S
D
Q
C
ORG
V
V
1 MILLION ERASE/WRITE CYCLES, with
40 YEARS DATA RETENTION
DUAL ORGANIZATION: 64 x 16 or 128 x 8
BYTE/WORD and ENTIRE MEMORY
PROGRAMMING INSTRUCTIONS
SELF-TIMED PROGRAMMING CYCLE with
AUTO-ERASE
READY/BUSY SIGNAL DURING
PROGRAMMING
SINGLE SUPPLY VOLTAGE:
– 4.5V to 5.5V for ST93C46 version
– 3V to 5.5V for ST93C47 version
SEQUENTIAL READ OPERATION
5ms TYPICAL PROGRAMMING TIME
ENHANCED ESD/LATCH UP
PERFORMANCE for ”C” VERSION
ST93C46A, ST93C46C, ST93C46T,
ST93C47C, ST93C47T are replaced by the
M93C46
CC
SS
1K (64 x 16 or 128 x 8) SERIAL MICROWIRE EEPROM
Chip Select Input
Serial Data Input
Serial Data Output
Serial Clock
Organisation Select
Supply Voltage
Ground
Figure 1. Logic Diagram
ORG
0.4mm Frame
PSDIP8 (B)
ST93C46A,46C,46T
8
D
C
S
1
ST93C47C,47T
V CC
V SS
ST93C46
ST93C47
NOT FOR NEW DESIGN
150mil Width
SO8 (M)
8
1
Q
AI00871C
1/13

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st93c46a Summary of contents

Page 1

... ST93C46A, ST93C46C, ST93C46T, ST93C47C, ST93C47T are replaced by the M93C46 DESCRIPTION This specification covers a range of 1K bit serial EEPROM products, the ST93C46A,46C,46T specified at 5V 10% and the ST93C47C,47T specified 5.5V. In the text, products are referred to as ST93C46. The ST93C46 bit Electrically Erasable Programmable Memory (EEPROM) fabricated with SGS-THOMSON’ ...

Page 2

... ST93C46A/46C/46T, ST93C47C/47T Table 2. Absolute Maximum Ratings Symbol T Ambient Operating Temperature A T Storage Temperature STG T Lead Temperature, Soldering LEAD V Input or Output Voltages ( Supply Voltage CC Electrostatic Discharge Voltage (Human Body model) V ESD Electrostatic Discharge Voltage (Machine model) Notes: 1. Except for the rating ”Operating Temperature Range”, stresses above those listed in the Table ”Absolute Maximum Ratings” ...

Page 3

... Supply Current (CMOS Inputs) I Supply Current (Standby) CC1 V Input Low Voltage ( Input High Voltage ( Output Low Voltage OL V Output High Voltage OH ST93C46A/46C/46T, ST93C47C/47T Figure 3. AC Testing Input Output Waveforms 2. 0.4V INPUT OUTPUT Test Condition Min Max ...

Page 4

... ST93C46A/46C/46T, ST93C47C/47T Table 5. AC Characteristics ( – 4. 5.5V Symbol Alt Parameter t t Chip Select High to Clock High SHCH CSS t t Clock Low to Chip Select High CLSH SKS t t Input Valid to Clock High DVCH DIS t t Clock High to Input Transition ...

Page 5

... Write instruc- tion. The Write instruction writes bits at one time into one of the 128 bytes or 64 words. After the start of the programming cycle a Busy/Ready signal is available on the Data output (Q) when Chip Select (S) is High. ST93C46A/46C/46T, ST93C47C/47T tCHQV A0 tSLQZ Q15/Q7 DATA OUTPUT ...

Page 6

... ST93C46A/46C/46T, ST93C47C/47T MEMORY ORGANIZATION The ST93C46 is organised as 128 bytes x 8 bits or 64 words x 16 bits. If the ORG input is left uncon- nected (or connected the x16 organization CC is selected, when ORG is connected to Ground (V ) the x8 organization is selected. When the SS ST93C46 is in standby mode, the ORG input should be unconnected or set to either V in order to get minimum power consumption ...

Page 7

... OP CODE Notes for x16 org. and 6 for x8 org for x16 org. and 4 for x8 org. ST93C46A/46C/46T, ST93C47C/47T signal ( will indicate ( driven high) that the ST93C46 is ready to receive a new instruction. Write The Write instruction (WRITE) is followed by the address and the data bits to be written ...

Page 8

... ST93C46A/46C/46T, ST93C47C/47T INSTRUCTIONS (cont’ will be returned driven high, and the ST93C46 will ignore any data on the bus. When the write cycle is completed, the Ready signal ( will indicate ( driven high) that the ST93C46 is ready to receive a new instruction. ...

Page 9

... EEPROM Common I/O Opera- tion”. DIFFERENCES BETWEEN ST93C46A AND ST93C46C The ST93C46C is an enhanced version of the ST93C46A and offers the following extra features: – Enhanced ESD voltage – Functional security filtering glitches on the clock input (C). Refer to Table 2 (Absolute Maximum Ratings) for more about ESD limits ...

Page 10

... ST93C46A/46C/46T, ST93C47C/47T Figure 9. WRITE Sequence with One Clock Glitch START ”0” ”1” WRITE ORDERING INFORMATION SCHEME Example: ST93C46A Operating Voltage Revision (1) 46 4.5V to 5.5V A CMOS 5.5V C CMOS F4 T CMOS F3 90 Turn pin out Notes: 1. Revision ”A” is not available for the ST93C47 product. ...

Page 11

... A A1 0.70 A2 3.10 B 0.38 B1 1.15 C 0.38 D 9.20 E 7.62 – E1 6.30 e1 2.54 – PSDIP8 Drawing is not to scale ST93C46A/46C/46T, ST93C47C/47T Max Typ 4.80 – 3.60 0.58 1.65 0.52 9.90 – 0.300 7.10 – 0.100 – 9.20 3.80 0. PSDIP-a inches Min Max 0.189 0.028 – 0.122 0.142 0.015 ...

Page 12

... ST93C46A/46C/46T, ST93C47C/47T SO8 - 8 lead Plastic Small Outline, 150 mils body width mm Symb Typ Min A 1.35 A1 0.10 B 0.33 C 0.19 D 4.80 E 3.80 e 1.27 – H 5.80 h 0. SO8 SO-a Drawing is not to scale 12/13 inches Max Typ Min 1.75 0.053 0.25 0.004 0.51 0.013 0.25 0.007 5.00 0.189 4.00 0.150 – 0.050 – ...

Page 13

... SGS-THOMSON Microelectronics - All Rights Reserved MICROWIRE is a registered trademark of National Semiconductor Corp. SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. ST93C46A/46C/46T, ST93C47C/47T 13/13 ...

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