MC14500B Datasheet, PDF (1/8 Pages) Motorola, Inc – Industrial Control Unit

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Industrial Control Unit
The MC14500B Industrial Control Unit (ICU) is a single–bit CMOS
processor. The ICU is designed for use in systems requiring decisions based
on successive single–bit information. An external ROM stores the control
program. With a program counter (and output latches and input multiplexers,
if required) the ICU in a system forms a stored–program controller that
replaces combinatorial logic. Applications include relay logic processing,
serial data manipulation and control. The ICU also may control an MPU or be
controlled by an MPU.
• 16 Instructions
• DC to 1.0 MHz Operation at VDD = 5 V
• On–Chip Clock (Oscillator)
• Executes One Instruction per Clock Cycle
• 3 to 18 V Operation
• Low Quiescent Current Characteristic of CMOS Devices
• Capable of Driving One Low–Power Schottky Load or Two Low–Power
TTL Loads over Full Temperature Range
DATA ³
D
C
IEN
X1 ¹⁴
X2 ¹³
OSC
I0 ⁷
6
I1
INST
I2 ⁵
REG
4
I3
1
RST
BLOCK DIAGRAM
D
C
LU
D
OEN
STO
STOC
MUX
C
RESULT
REG. (RR)
X1 — OSCILLATOR OUTPUT
X2 — OSCILLATOR INPUT
2 _WRITE
16
+V
VDD
8
VSS
15
RR
12 _JMP
11 _RTN
10
FLAG O
9
FLAG F
MC14500B
L SUFFIX
CERAMIC
CASE 620
P SUFFIX
PLASTIC
CASE 648
DW SUFFIX
SOIC
CASE 751G
ORDERING INFORMATION
MC14XXXBCP
MC14XXXBCL
MC14XXXBDW
Plastic
Ceramic
SOIC
TA = – 55° to 125°C for all packages.
PIN ASSIGNMENT
RST 1
WRITE 2
16 VDD
15 RR
DATA 3
14 X1
I3 4
13 X2
I2 5
12 JMP
I1 6
11 RTN
I0 7
10 FLAG O
VSS 8
9 FLAG F
REV 3
1/94
©_MM_Cot₁or₄o₅la₀, I₀n_Bc. 1995
306
MOTOROLA CMOS LOGIC DATA