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TMS27C010A-12JE Datasheet(PDF) 5 Page - Texas Instruments |
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TMS27C010A-12JE Datasheet(HTML) 5 Page - Texas Instruments |
5 / 13 page TMS27C010A 131 072 BY 8BIT UV ERASABLE TMS27PC010A 131 072 BY 8BIT PROGRAMMABLE READONLY MEMORIES SMLS110C − NOVEMBER 1990 − REVISED SEPTEMBER 1997 5 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 signature mode The signature mode provides access to a binary code identifying the manufacturer and type. This mode is activated when A9 (pin 26) is forced to 12 V. Two identifier bytes are accessed by toggling A0. All other addresses must be held low. The signature code for these devices is 97D6. A0 low selects the manufacturer’s code 97 ( Hex), and A0 high selects the device code D6 (Hex), as shown in Table 3. Table 3. Signature Mode IDENTIFIER† PINS IDENTIFIER† A0 DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0 HEX MANUFACTURER CODE VIL 1 0 0 1 0 1 1 1 97 DEVICE CODE VIH 1 1 0 1 0 1 1 0 D6 † E = G = VIL, A1−A8 = VIL, A9 = VH, A10−A16 = VIL, VPP = VCC. logic symbol‡ A0 12 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 E G 11 10 9 8 7 6 5 27 26 23 25 4 28 29 3 2 22 24 DQ0 13 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 14 15 17 18 19 20 EPROM 131 072 × 8 A ∇ A ∇ A ∇ A ∇ A ∇ A ∇ A ∇ A ∇ DQ7 21 0 16 [PWR DOWN] EN & A 0 131 071 ‡ This symbol is in accordance with ANSI / IEEE Std 91-1984 and IEC Publication 617-12. J package illustrated. |
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