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SDA2506-5 Datasheet Nonvolatile Memory 1-kbit E2prom

Manufacturer: Siemens Semiconductor Group (now Infineon)

Overview: Nonvolatile Memory 1-Kbit E2PROM SDA 2506-5 Preliminary Data MOS.

General Description

Data Transfer and Chip Control Three lines, each with several functions, are necessary for overall data transfer between the control processor and the E2PROM: a) – – – Data line D bidirectional serial data transfer serial entry of address and control bit direct control, D = 1 for erase, D = 0 for write b) Clock line Φ – shift clock for data, address and control bits – start readout with transfer of data from memory into shift register or start of data change during reprogramming c) Chip-enable line CE – chip reset and data input (active high) – chip enable (active low) Before the chip is enabled, data, address and control information is clocked in on the bidirectional data bus.

These data are retained in the shift register during reprogramming and readout until the second clock pulse.

The following data formats have to be entered: a) Readout memory, one 8-bit control word consisting of – seven address bits A0 through A6 (A0 first as LSB) – one control bit CB = "0" after A6 Reprogram Memory b) Erase, 8-bit input information consisting of – seven bits of address information A0 through A6 (A0 first as LSB) – one bit of control information CB = "1" after A6 c) – – – d) – – – Write, 16-bit input information consisting of eight bits of

Key Features

  • q Word-organized, reprogrammable nonvolatile memory in n-channel floating-gate technology q 128 × 8-bit organization q Supply voltage 5 V q Three lines between control processor and E2PROM for q q q q q q data transfer and chip control Serial data bus (eight data bits, seven address bits, one control bit) More than 104 reprogramming cycles per address Data retention for more than ten years (operatingtemperature range) Unlimited number of readout operations without refresh Erase or write in 10.

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SDA2506-5 Distributor