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Details, datasheet, quote on part number:S-29221A
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Datasheet text preview:
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 .......... 13 Three-wire Interface (DI-DO direct connection .......... 13 Memory Protection.......13 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 Ordering Information....19 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 0
Rev.1.1
CMOS SERIAL E2PROM
S-29XX1A Series
The S-29XX1A Series is high speed, low power 1K/2K/4K-bit E2PROM with a wide operating voltage range. They are organized as 64-word × 16-bit, 128-word×16-bit and 256-word×16-bit, respectively. Each is capable of sequential read, at which time addresses are automatically incremented in 16-bit blocks. The instruction code is compatible with the NM93CSXX Series. The S-29XX1A Series is capable of protecting the memory, 50% of which can be protected starting from address 00.
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Features
Low power consumption Standby : 1.0 µA Max. (VCC=6.5 V) Operating: 0.8 mA Max. (VCC=5.5 V) : 0.4 mA Max. (VCC=2.5 V) Endurance : 105 cycles/word Data retention : 10 years S-29131A : 1K bits NM93CS46 instruction code compatible S-29221A : 2K bits NM93CS56 instruction code compatible S-29231A : 2K bits CAT35C102 instruction code compatible S-29331A : 4K bits NM93CS66 instruction code compatible
Wide operating voltage range Write : 2.5 to 6.5 V Read : 1.8 to 6.5 V Memory Protection
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Pin Assignment
8-pin DIP Top view CS SK DI DO 1 2 3 4 8 7 6 5 S-29131ADP S-29221ADP S-29231ADP S-29331ADP VCC NC PROTECT GND NC VCC CS SK 8-pin SOP1 Top view 1 2 3 4 8 7 6 5 PROTECT GND DO DI
S-29131AFJ S-29221AFJ S-29231AFJ S-29331AFJ * differs depending on the package type : A : A type, (blank) : B type See n Dimensions.
Figure 1
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Pin Functions
Table 1
Pin Number Name DIP CS SK DI DO GND PROTECT 1 2 3 4 5 6 SOP1 3 4 5 6 7 8 Chip select input Serial clock input Serial data input Serial data output Ground Memory Protection Control Input Connected to GND or Open : Protection Valid Connected to Vcc : Protection Invalid No Connection Power supply Function
NC VCC
7 8
1 2
Seiko Instruments Inc.
1
CMOS SERIAL E2PROM S-29XX1A Series
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Block Diagram
Memory array
PROTECT
Write Protection Circuit
Bank 1* Bank 2
Address decoder
VCC GND
Data register DI Mode decode logic
Output buffer
DO
CS
SK
Clock generator * 50% of the memory can be protected starting from address 00
Figure 2
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Instruction Set
Table 2
Instruction READ (Read data) WRITE (Write data) ERASE (Erase data) WRAL (Write all) ERAL (Erase all) EWEN (Program enable) EWDS (Program disable) Start Bit 1 1 1 1 1 1 1 Op code 10 01 11 00 00 00 00 S-29131A A5 to A0 A5 to A0 A5 to A0 01xxxx 10xxxx 11xxxx 00xxxx Address Data S-29231A A6 to A0 A6 to A0 A6 to A0 01xxxxx 10xxxxx 11xxxxx 00xxxxx S-29221A XA6 to A0 XA6 to A0 XA6 to A0 01xxxxxx 10xxxxxx 11xxxxxx 00xxxxxx S-29331A A7 to A0 A7 to A0 A7 to A0 01xxxxxx 10xxxxxx 11xxxxxx 00xxxxxx D15 to D0 Output* D15 to D0 Input -- D15 to D0 Input -- -- --
x : Doesn't matter. * : Addresses are continuously incremented.
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Absolute Maximum Ratings
Table 3
Parameter Power supply voltage Input voltage Output voltage Storage temperature under bias Storage temperature Symbol VCC VIN VOUT Tbias T stg Ratings -0.3 to +7.0 -0.3 to VCC+0.3 -0.3 to VCC -50 to +95 -65 to +150 Unit V V V °C °C
2
Seiko Instruments Inc.
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