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Details, datasheet, quote on part number:S-29U394A-DFE
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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 ........ 2 Pin Capacitance.. 3 Endurance .......... 3 DC Characteristics ....... 3 AC Characteristics ....... 4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Receiving a Start-Bit .......... 7 Three-wire Interface (DI-DO direct connection) ........... 7 Connecting to the CPU with a Serial Port............ 8 Memory Protection....... 8 Ordering Information .......... 9 Characteristics .... 10 Dimensions (Unit : mm) ..... 15
Rev.1.11 CMOS SERIAL E2PROM
S-29UX94A Series
The S-29UX94A Series is low power 1K/2K/4K-bit serial E2PROMs with a low 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, where addresses are automatically incremented in 16-bit blocks. The S-29UX94A Series is capable of protecting the memory, 50% of which can be protected starting from address 00. Interface is structured so that this IC can be directly connected to the CPU with serial ports. 8-bit instructions make it easy to prepare your own software.
Features
· Low power consumption Standby : 2.0 µA Max. (VCC=3.6 V) Operating : 0.6 mA Max. (VCC=3.6 V) 0.4 mA Max. (VCC=2.7 V) Low operating voltage range Write : 1.8 to 3.6 V Read : 0.9 to 3.6 V Sequential read capable Memory Protection
· · · · · · · Can be easily connected to the serial port CS Active "L" Endurance : 105 cycles/word Data retention : 10 years S-29U194A : 1 Kbits S-29U294A : 2 Kbits S-29U394A : 4 Kbits
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Package
8-pin SOP 8-pin SSOP (PKG drawing code :FE008-A) (PKG drawing code :FS008-A)
Pin Assignment
8-pin SOP2 Top view CS SK DI DO
1 2 3 4 8 7 6 5
8-pin SSOP Top view VCC NC PROTECT GND CS SK DI DO
1 2 3 4 8 7 6 5
VCC NC PROTECT GND
S-29U194ADFE S-29U294ADFE S-29U394ADFE
S-29U194AFS S-29U294AFS S-29U394AFS * See
Dimensions
Figure 1
Table 1
Name CS SK DI DO GND PROTECT NC VCC Pin Number SOP2 SSOP 1 1 2 2 3 3 4 4 5 5 6 7 8 6 7 8 Function 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
Seiko Instruments Inc.
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CMOS SERIAL E2PROM S-29UX94A Series
n 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 Start Bit 1 1 1 1 Ope code 1000xxx x100xxx 0011xxx 0000xxx S-29U194A xx A5toA0 xx A5toA0 xxxxxxxx xxxxxxxx Address S-29U294A x A6toA0 x A6toA0 xxxxxxxx xxxxxxxx S-29U394A A7toA0 A7toA0 xxxxxxxx xxxxxxxx
Instruction READ (Read data) (Program data)
Data D15 to D0 Output* D15 to D0 Input
PROGRAM PEN PDS
(Program enable) (Program disable)
x: *:
Doesn't matter. When 16-bit data of the specified address is output, the data of the next address is output.
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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
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Recommended Operating Conditions
Table 4 Parameter Power supply voltage Symbol VCC Conditions Read Operation Write Enable/Disable Write Operation High level input voltage VIH VCC=1.8 to 3.6V VCC=0.9 to 1.8V VCC=1.8 to 3.6V VCC=0.9 to 1.8V Min. 0.9 1.8 0.8 × VCC 0.9 × VCC 0.0 0.0 -40 Typ. Max. 3.6 3.6 VCC VCC 0.2 × VCC 0.1 × VCC +85 Unit V V V V V V °C
Low level input voltage Operating temperature
VIL Topr
2
Seiko Instruments Inc.
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