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PDF MDT2020 Data sheet ( Hoja de datos )
| Número de pieza | MDT2020 | |
| Descripción | EPROM-Based 8-bit micro-controller | |
| Fabricantes | Micon Design Technology | |
| Logotipo |  |
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MDT2020
MDT2020
1. General Description
This EPROM-Based 8-bit micro-controller uses a fully static CMOS design technology
combines higher speed and smaller size with the low power and high noise immunity of
CMOS.
On chip memory system includes 2.0 K bytes of ROM, and 80 bytes of static RAM.
2. Features
The followings are some of the features on the hardware and software :
u Fully COMS static design
u 8-bit data bus
u On chip ROM size : 2 K words
u Internal RAM size : 80 bytes
(72 general purpose, 8 special registers)
u 36 single word instructions
u 14-bit instructions
u 2-level stacks
u Operating voltage : 2.3 V ~ 6.3 V
u Operating frequency : 0 ~ 20 MHz
u 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 Power-on Reset
u Power Edge-detector Reset
u Sleep mode for power saving
u 4 oscillator start-up time :
150 µs, 20 ms, 40 ms, 80 ms
u 8-bit real time clock/counter(RTCC) with 8-bit programmable prescaler
u 4 types of oscillator can be selected by code options :
RC Low cost RC oscillator
LFXT Low frequency crystal oscillator
XTAL Standard crystal oscillator
HFXT High frequency crystal oscillator
u On-chip RC oscillator based Watchdog Timer(WDT) can be operated freely
This specification are subject to be changed without notice. Any latest information please preview
http;//www.mdtic.com.tw
P. 1
VER 1.1
1 page  
(9) TMR (Time Mode Register)
MDT2020
Bit
20
3
4
5
Symbol
PS2 0
PSC
TCE
TCS
Function
Prescaler Value
RTCC rate
WDT rate
000
1:2
1:1
001
1:4
1:2
010
1:8
1:4
011
1 : 16
1:8
100
1 : 32
1 : 16
101
1 : 64
1 : 32
110
1 : 128
1 : 64
111
1 : 256
Prescaler assignment bit :
0 RTCC
1 : 128
1 Watchdog Timer
RTCC signal Edge :
0 Increment on low-to-high transition on RTCC pin
1 Increment on high-to-low transition on RTCC pin
RTCC signal set :
0 Internal instruction cycle clock
1 Transition on RTCC pin
(10) CPIO A, CPIO B, CPIO C (Control Port I/O Mode Register)
The CPIO register is “write-only”
“0”, I/O pin in output mode;
“1”, I/O pin in input mode.
(11) EPROM Option by Writer Programming:
Oscillator Type
RC Oscillator
HFXT Oscillator
XTAL Oscillator
LFXT Oscillator
Oscillator Start-up Time
150 µs,20ms,40ms,80ms
20 ms,40ms,80ms
20ms,40 ms,80ms
80 ms
Watchdog Timer control
Watchdog timer disable all the time
Watchdog timer enable all the time
This specification are subject to be changed without notice. Any latest information please preview
http;//www.mdtic.com.tw
P. 5
VER 1.1
5 Page 
MDT2020
(ii) OSC Type LF (C=20 p); WDT Disable
Voltage/Frequency
2.3 V
3.0 V
4.0 V
5.0 V
6.3 V
32 K
455 K
1M
3.5 µA @2.5V 78 µA @2.6V 132 µA
69.0 µA 115.0 µA 168.0 µA
123.0µA 190.0 µA 260.0 µA
195.0 µA 280.0 µA 370.0 µA
305.0 µA 425.0 µA 555.0 µA
Sleep
1 µA
1 µA
1 µA
5 µA
10 µA
(iii) OSC Type XT (C=10 p); WDT Enable
Voltage/Frequency
2.1 V
3.0 V
4.0 V
5.0 V
6.3 V
1M
98.0 µA
205.0 µA
350.0 µA
538.0 µA
890.0 µA
4M
300.0 µA
520.0 µA
790.0 µA
1.1 mA
1.65 mA
10 M
@2.3V779µA
1.20 mA
1.60 mA
2.20 mA
3.10 mA
Sleep
1.0 µA
4.0 µA
8.0 µA
15.0 µA
30.0 µA
(iv) OSC Type HF (C=10 p); WDT Enable
Voltage/Frequency
4M
10 M
20 M
Sleep
2.1 V
318.0 µA
695 µA @2.2V 1.47mA 1.0 µA
3.0 V
540.0 µA 1.15 mA
2.10 mA
4.0 µA
4.0 V
815.0 µA
1.70 mA
3.00 mA
8.0 µA
5.0 V
1.2 mA
2.30 mA
4.00 mA 15.0 µA
6.3 V
1.8 mA
3.30 mA
5.60 mA 30.0 µA
(G) Power Edge-detector Reset Voltage (Not in Sleep Mode), @ Vdd 5.0 V
Vpr 1.1~1.3 V
Vpr Vdd (Power Supply)
This specification are subject to be changed without notice. Any latest information please preview
http;//www.mdtic.com.tw
P. 11
VER 1.1
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet MDT2020.PDF ] | |
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