M62320P

MITSUBISHI < STD. LINEAR ICs > M62320P,FP 8-BIT I/O EXPANDER for I C BUS GENERAL DESCRIPTION The M62320P/FP is a CMOS 8-bit I/O expander which has serial to parallel and parallel to serial data converting functions. It can communicate with a microcontroller via few wiring 2 thanks to the adoption of the two-line I C BUS. Parallel data I/O terminal can be set to input or output mode alternatively in individual bits. Maximum 8 ICs can be connected to a bus by using three chip-select pins, so that it is possible to handle up to 64 bits data. PIN CONFIGURATION(TOP VIEW) 2 SO 1 SCL SDA D0 D1 D2 D3 GND 2 16 CS0 15 CS1 M62320P,FP 3 4 5 6 7 8 14 CS2 13 VDD 12 D7 11 D6 10 D5 9 D4 FEATURES Simple two-line (SCL and SDA) communication with a microcontroller. 8-bit data conversion between serial and parallel by I2 C BUS. Built-in power-on reset. Outline 16P4(P) 16P2N(FP) APPLICATION I/O port expansion for a microcontroller. Data conversion between serial and parallel in microcontroller peripherals. BLOCK DIAGRAM CS0 CS1 CS2 16 15 14 CHIP-SELECT SCL SDA 2 3 I C BUS TRANSCEIVER Output Data 8 OUTPUT DATA LATCH 2 SHIFT REGISTER 1 SO Input/Output 8 8 I/O SETTING DATA LATCH INPUT DATA LATCH 8 8 VDD 13 GND 8 8 Input Data POWER-ON RESET Å@ I/O PORT 12 11 10 9 7 6 5 4 D7 D6 D5 D4 D3 D2 D1 D0 2/20,1998(rev) ( 1 / 9 ) MITSUBISHI ELECTRIC MITSUBISHI < STD. LINEAR ICs > M62320P,FP 8-BIT I/O EXPANDER for I C BUS 2 PIN DESCRIPTION Pin No. Symbol 2 3 ...