TMP8243PI Datasheet | Toshiba

- INTEGRATEDCl RCUIT iii » TECHNICAL OAT A INPUT/OUTPUT EXPANDER TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT TMP8243P/TMP8243PI N-CHANNEL SILICON GATE MOS GENERAL DESCRIPTION The THP8243P is an input/output expander designed specifically to provide a low cost means of I/O expansion for the TLCS-84 family. The I/O ports of the TMPS243P serve as a direct extension of the resident I/O facilities of the TLCS-S4 microputers and are accessed by their own MOVD, ANLD, and ORLD instructions. Features a Low cost a Simple interface to TLCS-S4 microputers a Four 4-bit I/O ports a AND and OR directly to ports a Single 5V supply o High output drive a Direct extension of resident TMPS04SP/TMPS049P I/O ports. a patible with intel's S243 a -40°C to +S5°C Operation (TMPS243PI: Industrial Specification) PIN CONNECTION (TOP VIEW) BLOCK DIAGRAM P50 P40 P41 P42 P43 PROG P23 P22 Bel P20 GND vee P51 P52 P53 P60 P61 P62 P63 P73 P72 P71 P7a PORT 2 PORT 4 PORT 5 PORT 6 PORT 7 - INTEGRATEDCIRCUIT TECHNICAL DATA TMP8243P/TMP8243PI PIN NAMES AND PIN DESCRIPTION PROG (Input) Clock Input. A high to low transistion on PROG signifies that address and control are available on P20-23, and a low to high transition signifies that data is available on P20-23. CS (Input) Chip Select Input. status. A high on CS inhibits any change of output or internal P20-23 (Input/Output, 3-state) Four (4) bit bi-directional port contains the address and control bits on a high to low transition of PROG. During a low to high transition contains the data for a selected output port if a write oepration, or the data from a selected port before the low to high transition if a read operation. P40-43, P50-53, P60-63, P70-73 (Input/Output, 3-state) Four (4) bit bi-directional I/O ports. May be programmed to be input (during read), low impedance latched output (after write) or a 3-state (after read). Data on pins P20-23 may be directly written, ANDed or ORed with previous data. VCC (Power) +5...