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AT93C56-10PI-1.8 Datasheet(PDF) 5 Page - ATMEL Corporation |
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AT93C56-10PI-1.8 Datasheet(HTML) 5 Page - ATMEL Corporation |
5 / 21 page 5 AT93C46/56/66 0172Z–SEEPR–9/05 Note: The Xs in the address field represent DON’T CARE values and must be clocked. Notes: 1. This device is not recommended for new designs. Please refer to AT93C56A. 2. This device is not recommended for new designs. Please refer to AT93C66A. Table 5. Instruction Set for the AT93C46 Instruction SB Op Code Address Data Comments x 8 x 16 x 8 x 16 READ 1 10 A6 – A0 A5 – A0 Reads data stored in memory, at specified address EWEN 1 00 11XXXXX 11XXXX Write enable must precede all programming modes ERASE 1 11 A6 – A0 A5 – A0 Erases memory location An – A0 WRITE 1 01 A6 – A0 A5 – A0 D7 – D0 D15 – D0 Writes memory location An – A0 ERAL 1 00 10XXXXX 10XXXX Erases all memory locations. Valid only at VCC = 4.5V to 5.5V WRAL 1 00 01XXXXX 01XXXX D7 – D0 D15 – D0 Writes all memory locations. Valid only at V CC = 4.5V to 5.5V EWDS 1 00 00XXXXX 00XXXX Disables all programming instructions Table 6. Instruction Set for the AT93C56 (1) and AT93C66(2) Instruction SB Op Code Address Data Comments x 8 x 16 x 8 x 16 READ 1 10 A8 – A0 A7 – A0 Reads data stored in memory, at specified address EWEN 1 00 11XXXXXXX 11XXXXXX Write enable must precede all programming modes ERASE 1 11 A8 – A0 A7 – A0 Erases memory location An – A0 WRITE 1 01 A 8 – A0 A 7 – A0 D 7 – D0 D 15 – D0 Writes memory location A n– A0 ERAL 1 00 10XXXXXXX 10XXXXXX Erases all memory locations. Valid only at VCC = 4.5V to 5.5V WRAL 1 00 01XXXXXXX 01XXXXXX D 7 – D0 D 15 – D0 Writes all memory locations. Valid only at V CC = 5.0V ±10% and Disable Register cleared EWDS 1 00 00XXXXXXX 00XXXXXX Disables all programming instructions |
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