Semiconductor integrated circuit device comprising non-reprogram

Details Semiconductor integrated circuit device comprising non-reprogram Semiconductor integrated circuit device comprising non-reprogram

1989-05-15

1991-09-03

Hecker, Stuart N.

Static information storage and retrieval

Read/write circuit

Plural use of terminal

364200, 364243, G11C 800, G06F 1200

Patent

active

050461800

ABSTRACT:
A multifunctional memory comprises a mask ROM (2). When an "L" level signal is applied to a control pin (EXT), data is read out from the ROM (2) in response to an address signal inputted from a multiplex pin (AD/DA). Thereafter, the data read out from the ROM (2) is outputted from the multiplex pin (AD/DA). In this case, an "H" level signal is outputted from a chip select pin (CS). When an "H" level signal is applied to the control pin (EXT), an "L" level signal is outputted from the chip select pin (CE). Consequently, the EPROM (30) is rendered active. In addition, the address signal inputted from the multiplex pin (AD/DA) is outputted from a port/address pin (PORT/AD). Data is read out from the EPROM (30) in response to the address signal.

REFERENCES:
patent: 4141068 (1979-02-01), Mager et al.
patent: 4368515 (1983-01-01), Nielsen
patent: 4400798 (1983-08-01), Francis et al.
patent: 4542453 (1985-09-01), Patrick et al.
patent: 4603399 (1986-07-01), Cheek et al.
patent: 4610000 (1986-09-01), Lee
patent: 4802119 (1989-01-01), Heene et al.
Intel, Microprocessor and Peripheral Handbook, 1987, pp. 5-1 to 5-9.
Motorola, Single-Chip Microcomputer Data Book, (DL 132R1), 1984, pp. 3-746 to 3-761.
Intel, Embedded Controller Handbook, (1987), pp. 1-1 to 2-10.

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