Document
MDT2030
1. General Description
This ROM-Based 8-bit micro-controller uses a fully static CMOS technology process to achieve high speed, small size, the low power and high noise immunity. On chip memory includes 2K words EPROM, and 80 bytes static RAM. u u u u 4 oscillator start-up time can be selected by programming option: 150 µs, 20 ms, 40 ms, 80 ms 8-bit real time clock/counter(RTCC) with 8-bit programmable prescaler On-chip RC oscillator based Watchdog Timer(WDT) 12 I/O pins with their own independent direction control
2. Features 3. Applications
The followings are some of the features on the hardware and software : u u u u Fully CMOS static design 8-bit data bus On chip EPROM size : 2.0 K words Internal RAM size : 80 bytes (73 general purpose registers, 7 special registers) u u u u u u 36 single word instructions 14-bit instructions 2-level stacks Operating voltage : 2.3 V ~ 5.5 V Operating frequency : 0 ~ 20 MHz The most fast execution time is 200 ns under 20 MHz in all single cycle instructions except the branch instruction u Addressing modes include direct, indirect and relative addressing modes u u u u Power-on Reset Power edge-detector Reset Sleep Mode for power saving 4 types of oscillator can be selected by programming option: RC¡ÐLow cost RC oscillator LFXT¡ÐLow frequency crystal oscillator XTAL¡ÐStandard crystal oscillator HFXT¡ÐHigh frequency crystal oscillator This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw The application areas of this MDT2030 range from appliance motor control and high speed automotive to low power remote transmitters/receivers, pointing devices, and telecommunications processors, such as Remote controller, small instruments, chargers, toy, automobile and PC peripheral … etc.
4. Pin Assignment PA2 PA3 RTCC /MCLR Vss PB0 PB1 PB2 PB3 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 PA1 PA0 OSC1 OSC2 Vdd PB7 PB6 PB5 PB4
P. 1
2004/1
Ver. 1.3
MDT2030
5. Block Diagram
Port PA 0~P A3 4 bits Port A 11 bits 14 bits Instruction Register
Stack Two Levels
EPROM 2048¡Ñ14
RAM 73¡Ñ8
11 bits
Program Counters
Special Register Port PB0 ~P B7 8 bits Port B
OS OS C1 C2 MC LR Instruction Decoder
D0~D 7
Oscillator Circuit
Control Circuit
Data 8-bit
Power on Reset Power Down Reset Working Register ALU Status Register
8-bit Timer/Counter
Prescale
WDT/OST Timer
RTCC
This specification are subject to be changed without notice. Any latest information please preview http;//www.mdtic.com.tw
P. 2
2004/1
Ver. 1.3
MDT2030
6. Pin Function Description
Pin Name PA0~PA3 PB0~PB7 RTCC /MCLR OSC1 OSC2 Vdd Vss I/O I/O I/O I I I O Port A, TTL input level Port B, TTL input level Real Time Clock/Counter, Schmitt Trigger input levels Master Clear, Schmitt Trigger input levels Oscillator Input Oscillator Output Power supply Ground Function Description
7. Memory Map
(A) Register Map
Address 00 01 02 03 04 05 06 07~1F 30~3F 50~5F 70~7F
Description Indirect Ad.