4 / 13 page  CY7C194B CY7C195B Document #: 38-05409 Rev. *A Page 4 of 13 CY7C195B Truth Table CY7C194B Truth Table Pin Description Pin Type Description 28 DIP 24 DIP 24 SOJ 28 SOJ AX Input Address Inputs. 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 22, 23, 24, 25, 26, 27 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 18, 19, 20, 21, 22, 23 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 18, 19, 20, 21, 22, 23 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 22, 23, 24, 25, 26, 27 CE Control Chip Enable.12 11 11 12 I/OX Input or Output Data Input/Outputs. 16, 17, 18, 19 14, 15, 16, 17 14, 15, 16, 17 16, 17, 18, 19 NC – No Connect. Pins are not internally connected to the die. 1, 20, 21 – – 1, 20, 21 OE Control Output Enable (CY7C195 only). 13– –13 VCC Supply Power (5.0V). 28242428 WE Control Write Enable. 15131315 CE OE WE I/Ox Mode Power H X X High Z Deselect / Power-Down Standby (ISB) L L H Data Out Read Active (ICC) L X L Data In Write Active (ICC) L H H High Z Selected, outputs disabled Active (ICC) CE WE Input/Output Mode Power H X High Z Power-Down Standby (ISB) LH Data Out Read Active (ICC) L L Data In Write Active (ICC) |
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