uPD546
uPD546 is SINGLE CHIP MICROCOMPUTER manufactured by NEC.
features controller- oriented functions and efficient use of program memory , via a variety of multi-function instructions, powerful I/O instructions, and a number of bit manipulation and test-and-skip instructions .
The extensive flexibility and processing capabilities provided by the u -43 will enable advanced microputerization of both industrial and non- industrial controller applications.
FEATURES
Single chip microputer for controller applications. 2,000 by 8-bit ROM for program storage.
96 by 4- bit RAM for data storage.
35 input/output channels, with single bit manipulation and 4-bit parallel processing capabilities for all ports.
Two 4-bit input ports
Two 4
- bit input/output ports Four 4-bit output ports One 3-bit output port
A and B C and D E, F, G and H
3 level program counter stack, for 3 level subroutines or 2 level subroutines and an interrupt service.
Six 4-bit working registers in a portion of RAM.
An interrupt request input line, with interrupt enable/disable capability. Built-in 6-bit programmable interval timer, enabling 64 different time intervals or greater with use of RAM, and parallel processing to increase throughput . Built-in clock generator circuit, controlled with external, low- cost IFT (intermediate frequency transformer). Powerful 80 instruction set. 73 single-byte instructions and 7 double-byte instructions. A variety of multi- function instructions to increase throughput . Powerful input/output instructions . Bit manipulation and test-and-skip instructions. Binary addition , decimal addition and subtraction, and logical operations. A variety of subroutine call instructions.
1 byte call instruction for calling fixed addresses in page 0. 2 byte call instruction for calling any address in ROM. Instruction cycle time -- 10usec . Open drain outputs . P-channel MOS. Single power supply J
- 10V . 42 pin plastic DIP .
Two versions available : u PD546C Fully TTL patible. u PD553C Outputs capable of
- 40 volts for direct...
