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AK93C85AF Datasheet(PDF) 4 Page - Asahi Kasei Microsystems |
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AK93C85AF Datasheet(HTML) 4 Page - Asahi Kasei Microsystems |
4 / 13 page ASAHI KASEI [AK93C85A/95A/10A] DAM02E-01 1999/10 - 4 - Functional Description The AK93C85A/95A/10A has 4 instructions such as READ, WRITE, EWEN and EWDS. A valid instruction consists of a Start Bit (Logic"1"), the appropriate Op Code and the desired memory Address location. The CS pin must be brought low for a minimum of 250ns (Tcs) between each instruction when the instruction is continuously executed. Instruc- tion Start Bit Op Code Address Data Comments READ 1 10 A9-A0 D15-D0 Reads data stored in memory, at specified address. WRITE 1 01 A9-A0 D15-D0 Writes register. EWEN 1 00 11XXXXXXXX Write enable must precede all programming modes. EWDS 1 00 00XXXXXXXX Disables all programming instructions. WRAL 1 00 01XXXXXXXX D15-D0 Writes all registers. table1. Instruction Set for the AK93C85A Instruc- tion Start Bit Op Code Address Data Comments READ 1 10 A10-A0 D15-D0 Reads data stored in memory, at specified address. WRITE 1 01 A10-A0 D15-D0 Writes register. EWEN 1 00 11XXXXXXXXX Write enable must precede all programming modes. EWDS 1 00 00XXXXXXXXX Disables all programming instructions. WRAL 1 00 01XXXXXXXXX D15-D0 Writes all registers. table2. Instruction Set for the AK93C95A Instruc- tion Start Bit Op Code Address Data Comments READ 1 10 A11-A0 D15-D0 Reads data stored in memory, at specified address. WRITE 1 01 A11-A0 D15-D0 Writes register. EWEN 1 00 11XXXXXXXXXX Write enable must precede all programming modes. EWDS 1 00 00XXXXXXXXXX Disables all programming instructions. WRAL 1 00 01XXXXXXXXXX D15-D0 Writes all registers. table3. Instruction Set for the AK93C10A (Note) The WRAL instruction are used for factory function test only. User can't use the WRAL instruction. The AK93C85A/95A/10A perceives the start bit in the logic"1" and also "01". |
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