TE7753

TEL Original Products TE7753/TE7754 DATA SHEET TE7753/TE7754 SUPER I/O EXPANDER www.DataSheet4U.com [Outline] TE7753 and TE7754 are peripheral devices connected to a microprocessor, or general-purpose interface devices each having nine 8-bit parallel data input/output ports. Two port I/O setting modes, soft mode and hard mode, can be selected. Switching the modes eases the connection to an 86-series or 68-series CPU. [Characteristics] 1. 2. 3. 4. 5. Equipped with nine 8-bit parallel I/O ports Allowing I/O setting in bit units (port 8 only) Interface designed for connections with various types of CPUs High drive current (IOL = 12 mA: Port 9 only) Choice of two modes Soft mode : I/O setting is enabled for nine ports by software instructions from the CPU. Hard mode : I/O setting is enabled for six ports by hardware setting of pins IOS2 to IOS0. 6. Space merit (body size 14 mm x 14 mm) 7. State of ports after resetting Soft mode : All ports are in input state. Hard mode : TE7753: Output ports are in High state. TE7754: Output ports are in Low state. 8. CMOS, 5 V (single supply voltage) Rev.1.00 TOKYO ELECTRON DEVICE LIMITED 1 TEL Original Products [Contents] TE7753/TE7754 [Outline] ..................................................................................................................................................1 [Characteristics]....................................................................................................................................