MDT10P23(CC )
1. General Description
This EPROM-Based 8-bit micro-controller
uses a fully static CMOS design technology
to achieve high speed, small size, low power
and high noise immunity.
On chip memory includes 2K words EPROM
and80 bytes static RAM.
Four comparator inputs with external Vref
(not for 18 pin package) are also provided.
2. Features
u
Fully CMOS static design
u
8-bit data bus
u
On chip EPROM size : 2 K words
u
Internal RAM size : 80 bytes
(72 general purpose registers, 8
special registers)
u
36 single word instructions
u
14-bit instructions
u
2-level stacks
u
Operating voltage : 2.3V ~ 6.0 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
Built-in Power-on Reset
u
4 Channel comparator
u
Power edge-detector Reset
u
Sleep Mode for power saving
u
8-bit real time clock/counter(RTCC) with
8-bit programmable prescaler
u
4 types of oscillator can be selected by
programming option:
This specification are subject to be changed without notice. Any latest information
please preview http;//www.mdtic.com.tw
RC－Low cost RC oscillator
LFXT－Low frequency crystal oscillator
XTAL－Standard crystal oscillator
HFXT－High frequency crystal oscillator
u
4 oscillator start-up time can be
selected by programming option:
150
µs,
20 ms, 40 ms, 80 ms
u
On-chip RC oscillator based Watchdog
Timer(WDT) can be operated freely
u
12 I/O(for 18 pins package),14 I/O(for 20
pins package),16 I/O(for 22/24 pins
package) pins with their own independent
direction control
3. Applications
The application areas of this MDT10P23
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
P. 1
2005/6
Ver. 1.4
MDT10P23(CC )
6. Pin Function Description
Pin Name
PA0~PA7
I/O
I/O
Function Description
PA0~PA3 : TTL input level or comparator input
PA4 : TTL input level or comparator VREF input
PA5~PA7 : 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
Unused ,do not connect
PB0~PB7
RTCC
/MCLR
OSC1
OSC2
Vdd
Vss
NC
I/O
I
I
I
O
7. Memory Map
(A) Register Map
Address
00
01
02
03
04
05
06
07
08~0F
10~1F
30~3F
50~5F
70~7F
Description
Indirect Addressing Register
RTCC
PC
STATUS
MSR
Port A
Port B
Control register for comparator
Internal RAM, General Purpose Register
Internal RAM, Memory bank 0
Internal RAM, Memory bank 1
Internal RAM, Memory bank 2
Internal RAM, memory bank 3
This specification are subject to be changed without notice. Any latest information
please preview http;//www.mdtic.com.tw
P. 4
2005/6
Ver. 1.4
MDT10P23(CC )
(1) IAR ( Indirect Address Register) : R0
(2) RTCC (Real Time Counter/Counter Register) : R1
(3) PC (Program Counter) : R2
Write PC, CALL --- always 0
LJUMP, JUMP, LCALL --- from instruction word
RTWI, RET --- from STACK
A9
A8
A7~A0
Write PC, JUMP, CALL --- from STATUS b5
LJUMP, LCALL --- from instruction word
RTWI, RET --- from STACK
Write PC --- from ALU
LJUMP, JUMP, LCALL, CALL --- from instruction word
RTWI, RET --- from STACK
(4) STATUS (Status register) : R3
Bit
0
1
2
3
4
5
Symbol
C
HC
Z
PF
TF
page
Carry bit
Half Carry bit
Zero bit
Power loss Flag bit
Time overflow Flag bit
ROM Page select bit :
00 : 000H --- 1FFH
01 : 200H --- 3FFH
7
——
General purpose bit
Function
This specification are subject to be changed without notice. Any latest information
please preview http;//www.mdtic.com.tw
P. 5
2005/6
Ver. 1.4
京公网安备 11010802033920号
EEWORLD
