DS2045Y-100# Maxim Integrated Products, DS2045Y-100# Datasheet
DS2045Y-100#
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DS2045Y-100# Summary of contents
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... PART TEMP RANGE DS2045AB-70# -40°C to +85°C DS2045AB-100# -40°C to +85°C DS2045Y-70# -40°C to +85°C DS2045Y-100# -40°C to +85°C #Denotes a RoHS-compliant device that may include lead that is exempt under the RoHS requirements. AD0–AD7 8051 MICROPROCESSOR P1.0–7 P2.0–7 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’ ...
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... RECOMMENDED OPERATING CONDITIONS (T = -40°C to +85°C) A PARAMETER SYMBOL Supply Voltage Input Logic 1 Input Logic 0 DC ELECTRICAL CHARACTERISTICS ( ±5% for DS2045AB ±10% for DS2045Y PARAMETER SYMBOL Input Leakage Current I/O Leakage Current Output-Current High Output-Current Low Output-Current Low RST ...
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... AC ELECTRICAL CHARACTERISTICS ( ±5% for DS2045AB ±10% for DS2045Y PARAMETER CE to Output Valid Output Active Output High Impedance from Deselection Output Hold from Address Change Write Cycle Time Write Pulse Width Address Setup Time Write Recovery Time Output High Impedance from WE Output Active from WE ...
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... DS2045Y/AB Single-Piece 1Mb Nonvolatile SRAM ADDRESSES OUT (SEE NOTE 9.) 4 _____________________________________________________________________ ACC COE t COE V OH OUTPUT DATA VALID V OL Read Cycle ...
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... ADDRESSES OUT D IN (SEE NOTES 10–13.) ADDRESSES OUT D IN (SEE NOTES 10–13.) DS2045Y/AB Single-Piece 1Mb ODW HIGH IMPEDANCE DATA IN STABLE COE ODW DATA IN STABLE V IL _____________________________________________________________________ Nonvolatile SRAM Write Cycle WR1 OEW t DH1 Write Cycle WR2 DH2 ...
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... DS2045Y/AB Single-Piece 1Mb Nonvolatile SRAM ~2. CE, WE BACKUP CURRENT SUPPLIED FROM LITHIUM BATTERY RST (SEE NOTES 1, 7.) Note 1: RST is an open-drain output and cannot source current. An external pullup resistor should be connected to this pin to real- ize a logic-high level. Note 2: These parameters are sampled with a 5pF load and are not 100% tested. ...
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... CC 0.35 0.30 0.25 0.20 0.15 0.10 0. 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 I (mA) OL DS2045Y/AB Single-Piece 1Mb Typical Operating Characteristics SUPPLY CURRENT vs. SUPPLY VOLTAGE 250 T = +25°C A 240 230 220 210 200 190 180 170 160 150 6.0 4.0 4 ...
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... DS2045Y/AB Single-Piece 1Mb Nonvolatile SRAM BALLS NAME A1, A2, A3, A4 GND Ground B1, B2, B3, B4 N.C. No Connection C1, C2, C3, C4 A15 Address Input 15 D1, D2, D3, D4 A16 Address Input 16 RST E1, E2, E3, E4 Open-Drain Reset Output F1, F2, F3 Supply Voltage CC WE G1, G2, G3, G4 Write Enable Input OE H1, H2, H3, H4 ...
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... BGA assembly techniques. Two versions of the DS2045 are available that provide either a 5% (DS2045AB) or 10% (DS2045Y) power- monitoring trip point. The DS2045 also contains a power-supply monitor output, RST, which can be used as a CPU supervisor for a microprocessor. ...
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... Data-Retention Mode The DS2045AB provides full functional capability for V greater than 4.75V and write-protects at 4.5V. The CC DS2045Y provides full functional capability for V greater than 4.5V and write-protects at 4.25V. Data is maintained in the absence support circuitry. The NV static RAM constantly moni- tors V ...
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... DS2045 module. Removal of the topside label violates the environmen- tal integrity of the package and voids the warranty of the product. DS2045Y/AB Single-Piece 1Mb Sn-Pb EUTECTIC To achieve the best results when using the DS2045, ASSEMBLY decouple the power supply with a 0.1µF capacitor. Use a high-quality, ceramic surface-mount capacitor if pos- 3° ...
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... DS2045Y/AB Single-Piece 1Mb Nonvolatile SRAM TOP VIEW GND B N.C. A15 C A16 D RST DQ7 K L DQ6 M DQ5 DQ4 N P DQ3 DQ2 R DQ1 T DQ0 U GND V W GND Y GND Revision History Pages changed at Rev2 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied ...