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Details, datasheet, quote on part number:NM93CS46LZ
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Datasheet text preview:
NM93CS46 (MICROWIRE Bus Interface) 1024-Bit Serial EEPROM with Data Protect and Sequential Read
February 2000
NM93CS46 (MICROWIRETM Bus Interface) 1024-Bit Serial EEPROM with Data Protect and Sequential Read
General Description
NM93CS46 is a 1024-bit CMOS non-volatile EEPROM organized as 64 x 16-bit array. This device features MICROWIRE interface which is a 4-wire serial bus with chipselect (CS), clock (SK), data input (DI) and data output (DO) signals. This interface is compatible to many of standard Microcontrollers and Microprocessors. NM93CS46 offers programmable write protection to the memory array using a special register called Protect Register. Selected memory locations can be protected against write by programming this Protect Register with the address of the first memory location to be protected (all locations greater than or equal to this first address are then protected from further change). Additionally, this address can be "permanently locked" into the device, making all future attempts to change data impossible. In addition this device features "sequential read", by which, entire memory can be read in one cycle instead of multiple single byte read cycles. There are 10 instructions implemented on the NM93CS46, 5 of which are for memory operations and the remaining 5 are for Protect Register operations. This device is fabricated using Fairchild Semiconductor floating-gate CMOS process for high reliability, high endurance and low power consumption. "LZ" and "L" versions of NM93CS46 offer very low standby current making them suitable for low power applications. This device is offered in both SO and TSSOP packages for small space considerations.
Features
I Wide VCC 2.7V - 5.5V I Programmable write protection I Sequential register read I Typical active current of 200µA 10µA standby current typical 1µA standby current typical (L) 0.1µA standby current typical (LZ) I No Erase instruction required before Write instruction I Self timed write cycle I Device status during programming cycles I 40 year data retention I Endurance: 1,000,000 data changes I Packages available: 8-pin SO, 8-pin DIP, 8-pin TSSOP
Functional Diagram
CS SK DI INSTRUCTION REGISTER VCC INSTRUCTION DECODER CONTROL LOGIC AND CLOCK GENERATORS PRE PE
ADDRESS REGISTER
PROTECT REGISTER
COMPARATOR AND WRITE ENABLE
HIGH VOLTAGE GENERATOR AND PROGRAM TIMER
DECODER
EEPROM ARRAY 16
READ/WRITE AMPS 16 VSS
DATA IN/OUT REGISTER 16 BITS DO DATA OUT BUFFER
© 1999 Fairchild Semiconductor Corporation NM93CS46 Rev. F.2
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www.fairchildsemi.com
NM93CS46 (MICROWIRE Bus Interface) 1024-Bit Serial EEPROM with Data Protect and Sequential Read
Connection Diagram
Dual-In-Line Package (N) 8Pin SO (M8) and 8Pin TSSOP (MT8)
CS SK DI DO 1 2 3 4 8 VCC PRE PE GND PRE VCC CS SK 1 2 3 4 8 PE GND DO DI
Normal Pinout
7 6 5
Rotated Pinout
7 6 5
Top View Package Number N08E, M08A and MTC08
Pin Names
CS SK DI DO GND PE PRE VCC Chip Select Serial Data Clock Serial Data Input Serial Data Output Ground Program Enable Protect Register Enable Power Supply
Ordering Information NM 93 CS XX T LZ E XXX
Package
Letter
N M8 MT8 None V E Blank L LZ Blank T Density 46 C CS Interface 93
Description
8-pin DIP 8-pin SO 8-pin TSSOP 0 to 70°C -40 to +125°C -40 to +85°C 4.5V to 5.5V 2.7V to 5.5V 2.7V to 5.5V and <1µA Standby Current Normal Pin Out Rotated Pin Out 1024 bits CMOS Data protect and sequential read MICROWIRE
Temp. Range
Voltage Operating Range
Fairchild Memory Prefix
2
NM93CS46 Rev. F.2
www.fairchildsemi.com
NM93CS46 (MICROWIRE Bus Interface) 1024-Bit Serial EEPROM with Data Protect and Sequential Read
Absolute Maximum Ratings (Note 1)
Ambient Storage Temperature All Input or Output Voltages with Respect to Ground Lead Temperature (Soldering, 10 sec.) ESD rating -65°C to +150°C +6.5V to -0.3V
Operating Conditions
Ambient Operating Temperature NM93CS46 NM93CS46E NM93CS46V Power Supply (VCC) 0°C to +70°C -40°C to +85°C -40°C to +125°C 4.5V to 5.5V
+300°C 2000V
DC and AC Electrical Characteristics VCC = 4.5V to 5.5V unless otherwise specified
Symbol
ICCA ICCS IIL IOL VIL V IH V OL1 VOH1 V OL2 VOH2 fSK tSKH tSKL tSKS tCS tCSS tPRES tDH tPES tDIS tCSH tPEH tPREH tDIH tPD tSV tDF tWP
Parameter
Operating Current Standby Current Input Leakage Output Leakage Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage Output Low Voltage Output High Voltage SK Clock Frequency SK High Time SK Low Time SK Setup Time Minimum CS Low Time CS Setup Time PRE Setup Time DO Hold Time PE Setup Time DI Setup Time CS Hold Time PE Hold Time PRE Hold Time DI Hold Time Output Delay CS to Status Valid CS to DO in Hi-Z Write Cycle Time
Conditions
CS = VIH, SK=1.0 MHz CS = VIL VIN = 0V to VCC (Note 2)
Min
Max
1 50 ±-1
Units
mA µA µA V V V MHz ns ns ns ns ns ns ns ns ns ns ns ns ns
-0.1 2 IOL = 2.1 mA IOH = -400 µA IOL = 10 µA IOH = -10 µA (Note 3) 0°C to +70°C -40°C to +125°C 250 300 250 50 (Note 4) 250 100 50 70 50 100 0 250 50 20 2.4
0.8 VCC +1 0.4 0.2
VCC - 0.2 1
500 500 CS = VIL 100 10
ns ns ns ms
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NM93CS46 Rev. F.2
www.fairchildsemi.com
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