1
8Bit Single Chip Microcontroller
DMC73C168
1. INTRODUCTION
3
1.1 Key Features
3
2. DMC73C168 BLOCK DIAGRAM
5
3. PIN ASSIGNMENT AND DESCRIPTION
6
3.1 DMC73C168 Pin Assignment
6
3.2 Description
8
4. ARCHITECTURE
11
4.1 Register File (RF)
12
4.2 Peripheral File (PF)
12
4.3 Peripheral RAM File (PRF)
12
4.4 Stack Pointer (SP)
13
4.5 Status Register (ST)
13
4.6 Program Counter (PC)
14
4.7 Peripheral File Map
14
4.8 Interrupt and Reset Priorities
33
5. DESCRIPTION OF EACH FUNCTION
34
5.1 Input / Output Ports
34
5.2 Device Initialization
36
5.3 I/O Control Register
36
5.4 Interrupt Logic and External Interrupt
38
5.5 Programmable Timer / Event Counter
41
5.6 A/D Converter
47
5.7 PLL
51
5.8 IF Counter
59
5.9 Serial Communication I/O Ports : SIO1, SIO2
63
6. OTP DEVICE SPECIFICATION
66
6.1 Pin Assignment of OTP and OTP Programming Adapter Board
66
Table of Contents
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2
8Bit Single Chip Microcontroller
DMC73C168
7. ELECTRICAL SPECIFICATION
67
7.1 Absolute Maximum Ratings Over Operating Free-Air Temperature Range
67
7.2 Recommended Operating Conditions
68
7.3 Electrical Characteristics Over Full Range of Operation
69
7.4 AC Characteristics for Input/Output Ports
70
7.5 A/D Converter Characteristics
71
7.6 AC Characteristics for Serial I/O Ports
71
7.7 Schematic of Input/Outputs
72
7.8 80 Pin Quad Flat Package (Mechanical Data)
73
* APPENDICES
A. DMC73C168 Table
75
B. Development Support
75
C. OTP Programming
79
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DAEWOO ELECTRONICS CO., LTD.
3
8Bit Single Chip Microcontroller
DMC73C168
1. INTRODUCTION
The DMC73C168 is an 8-Bit microcontroller that contains Prescaler, PLL Frequency Synthesizer
and 2 channel A/D conv erter for Digital Tuning System.
The device is provided with abundant I/O ports and 2 channel serial interface ports (SI/O) controlled
by powerful instruction. The package is 80-pin QFP and hi gh performance CPU and internal peripheral
allow flexible and easy system design in car-stereo, radio tuner and Hi-Fi audio system.
1.1 Key Features
n
CMOS Technology
n
Memory Configuration
l
256 Byte On-Chip RAM Register file plus 128 Byte Peripheral Free RAM
l
Memory-Mapped Ports for Easy Addressing
l
16K-Byte On-Chip ROM
n
On-Chip PLL Frequency Synthesizer with Dual Modules Prescaler
l
Independant Frequency input ports : Max 150MHz at FM, 40MHz at AM
l
Two Types of Frequency Dividing Method : Pulse Swallow and Direct
l
8 Kinds of reference Frequencies : 1, 5, 6.25, 9, 10, 12.5, 25 and 50KHz
n
2 Channel SIO port
n
2 Channel On-Chip Timer
l
16-Bit with 5-Bit Prescaler and 16-Bit capture latch, timer outputs
l
Internal interrupt with Automatic timer Reload
n
On-Chip A/D Converter
l
2-channels with 8 bit resolution
l
Ratiometric Conversion
l
144 Machine-Cycles Conv ersion time (64us)
n
On-Chip IF Counter
l
17-Bit, Gate Time : Program can select from 1ms to 15ms
l
maximum Input Frequency : FM IF = 20MHz, AM IF = 5MHz
n
Easy Interrupt Handling
l
External Interrupts with Schmitt-Trigger Input
l
Software Calls through Interrupt Vectors
l
Software Monitoring of Interrupt Status
l
Precise Interrupt Timing through Capture Latch
n
Selectable Beep clock : 417Hz, 1KHz, 1.25KHz, 2.5KHz
n
64 I/O Pins
l
64 Bidirectional Pins
n
W ide Operating Range
l
Voltage(VDD) : 5V
10%
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4
8Bit Single Chip Microcontroller
DMC73C168
l
Clock : 4.5MHz
l
Temperature : -40 deg to 85 deg
l
One Machine Execution Time : 0.44us (with 4.5MHz Crystal Oscillator)
n
Low operating Current
l
Halt Mode for Power Savings (Typical : 1uA at OSC stop)
l
W arm-up mode for avoid unstable osc operation at the wake time from Halt mode.
The warm-up time can be adjustable by S/W.
n
Package
l
80 QFP (Quad Flat Package)
n
Development Support
l
Evaluation Module : EVM73C00A & ADP73C168
l
Assembler/Linker Cross Support for Popular Hosts
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DAEWOO ELECTRONICS CO., LTD.
5
8Bit Single Chip Microcontroller
DMC73C168
2. DMC73C168 BLOCK DIAGRAM
INT4-0
A0/FMIF
RESET
A1/AMIF
INT3
A2/AD1
CE
A3/AD2
(INT1)
INT4-1
A4/ECI1
A5/ECI2
INT2
A6/INT4
A7/INT3
INT6
E0/SO1
VDD
E1/SI1
INT5
E2/SCLK1
VSS
E3/SO2
INT7
E4/SI2
E5/SCLK2
E6
E7/BEEP
OSCIN
B0/T1OUT
B1/T2OUT
OSCOUT
TEST
B2-B7
EO1
EO2
C0-C7
VCOL
VCOH
D0-D7
VREF
VASS
F0-F7
H0-H7
G0-G7
Interrupt
Control
EXT INT4
EXT INT3
A/D CON
TIMER1
TIMER2
SIO 1
SIO 2
BEEP GEN
PORT A
PORT E
PORT B
RAM
384 Byte
Peripheral
/Memory
Control
ROM
16 Kbyte
PORT B
PORT C
PORT D
PORT F
PORT G
PORT H
8 BIT
CPU
OSC
GEN
Phase Locked
Loop
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