M66014FP Datasheet, PDF (1/5 Pages) Mitsubishi Electric Semiconductor – 16-BIT SERIAL BUS CONTROLLER

M66014FP
16-bit Serial Bus Controller
REJ03F0265-0200
Rev.2.00
Mar 18, 2008
Description
M66014 semiconductor integrated circuit is a serial bus controller. It converts 2-byte parallel data that arrives from
microcomputer into serial and outputs it to serial bus. It also converts serial data input from serial bus into parallel and
outputs it to microcomputer.
The M66014 is used for the extension of microcomputer I/O ports and two-way communication with peripheral
equipment connected with serial buses.
Features
• Compatible with general-purpose 8-bit microprocessor busses
• TTL level input (one microcomputer side)
• Interrupt output
• Schmitt input (RESET, CS, SIN)
• Pin arrangement is fully compatible with M66011FP
• Low power dissipation
• Wide operating temperature range (Ta = –20 to 75°C)
Application
Microcomputer I/O port extension, etc.
Block Diagram
A1 A0
21 22
Reset input RESET 1
Chip select input CS 3
Write input WR 2
Read input RD 23
Timing
control
circuit
Clock input
Clock output
Xin
15
14
Xout
Oscillation
circuit
CLK, LOAD
Shift register for lower
byte serial output (8 bits)
SRL
CLK, LOAD
Shift register for upper
byte serial output (8 bits)
SRU
Shift clock output
20 SCLK
16 INT Interrupt output
17 OE
Output enable output
19 SOUT
Serial data output
Data bus
D0 4
D1 5
D2 6
D3 7
D4 8
D5 9
D6 10
D7 11
8
8
8
×8
Read
register
CLK
Shift register for serial
input (16-bit)
18 SIN
Serial data input
8
REJ03F0265-0200 Rev.2.00 Mar 18, 2008
Page 1 of 4