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CAT93C56VA-1.8-GT2E Datasheet(PDF) 6 Page - ON Semiconductor |
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CAT93C56VA-1.8-GT2E Datasheet(HTML) 6 Page - ON Semiconductor |
6 / 17 page CAT93C56, CAT93C57 http://onsemi.com 6 The format for all instructions sent to the device is a logical “1” start bit, a 2−bit (or 4−bit) opcode, 7−bit address (CAT93C57) / 8−bit address (CAT93C56) (an additional bit when organized X8) and for write operations a 16−bit data field (8−bit for X8 organizations). The instruction format is shown in Instruction Set table. Table 10. INSTRUCTION SET Instruction Device Type Start Bit Opcode Address Data Comments x8 x16 x8 x16 READ 93C56 (Note 8) 1 10 A8−A0 A7−A0 Read Address AN–A0 93C57 1 10 A7−A0 A6−A0 ERASE 93C56 (Note 8) 1 11 A8−A0 A7−A0 Clear Address AN–A0 93C57 1 11 A7−A0 A6−A0 WRITE 93C56 (Note 8) 1 01 A8−A0 A7−A0 D7−D0 D15−D0 Write Address AN–A0 93C57 1 01 A7−A0 A6−A0 D7−D0 D15−D0 EWEN 93C56 (Note 8) 1 00 11XXXXXXX 11XXXXXX Write Enable 93C57 1 00 11XXXXXX 11XXXXX EWDS 93C56 (Note 8) 1 00 00XXXXXXX 00XXXXXX Write Disable 93C57 1 00 00XXXXXX 00XXXXX ERAL 93C56 (Note 8) 1 00 10XXXXXXX 10XXXXXX Clear All Addresses 93C57 1 00 10XXXXXX 10XXXXX WRAL 93C56 (Note 8) 1 00 01XXXXXXX 01XXXXXX D7−D0 D15−D0 Write All Addresses 93C57 1 00 01XXXXXX 01XXXXX D7−D0 D15−D0 8. Address bit A8 for 256x8 organization and A7 for 128x16 organization are “Don’t Care” bits, but must be kept at either a “1” or “0” for READ, WRITE and ERASE commands. |
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