MDT10P74(BA)
Q1. General Description
This EPROM-Based 8-bit micro-controller uses a fully static
CMOS technology process to achieve higher speed and
smaller size with the low power consumption and high
noise immunity. On chip memory includes 4K words of
ROM, and 192 bytes of static RAM.
A/D converter module:
-8 analog inputs multiplexed into one A/D
converter
-8-bit resolution
TMR0: 8-bit timer/counter
TMR1: 16-bit timer/counter
TMR2: 8-bit timer
4 types of oscillator can be selected by
2. Features
The followings are some of the features on the hardware
and software:
Fully CMOS static design
8-bit data bus
On chip EPROM size: 4.0 K words
Internal RAM size: 192 bytes
37 single word instructions
14-bit instructions
8-level stacks
Operating voltage: 2.5 V ~ 5.5 V (PRD Disable)
4.5 V ~ 5.5 V (PRD Enable)
Operating frequency: DC ~ 20 MHz
The most fast execution time is 200 ns under 20
MHz in all single cycle instructions except the
branch instruction
Addressing modes include direct, indirect and
relative addressing modes
Power-on Reset
Power edge-detector Reset
Power range-detector Reset
Sleep Mode for power saving
Capture, Compare, PWM module
Synchronous serial port with SCM,I2C
12 interrupt sources:
-External INT pin
-TMR0 timer, TMR1 timer, TMR2 timer
-A/D conversion completion
-Port B<7:4> interrupt on change
-CCP1, CCP2, SCM, USAR, USAT, PCM
programming option:
RC－Low cost RC oscillator
LFXT－Low frequency crystal oscillator
XTAL－Standard crystal oscillator
HFXT－High frequency crystal oscillator
On-chip RC oscillator based Watchdog Timer
(WDT)
33 I/O pins with their own independent direction
control
3. Applications
The application areas of this MDT10P74 range from
appliance motor control and high speed auto-motive to
low
power
remote
transmitters/receivers,
pointing
devices, and telecommunications processors, such as
Remote controller, small instruments, chargers, toy,
automobile and PC peripheral … etc.
This specification are subject to be changed without notice. Any latest information
please preview http;//www.mdtic.com.tw
P. 1
2008/6 Ver. 1.6
MDT10P74(BA)
5. Order Information
Device
MDT10P74P11
MDT10P74Q11
MDT10P74L11
ROM
(Words)
4K
4K
4K
RAM
(Bytes)
192
192
192
I/O
33
33
33
A/D
(8 bits)
8-channel
8-channel
8-channel
Timer
(8/16)
2/1
2/1
2/1
CCP
2
2
2
SCM/
USART
YES/YES
YES/YES
YES/YES
Package
DIP
QFP
PLCC
6. Pin Function Description
Pin Name
PA0~PA3, PA5
PA4
PB0~PB7
PC0~PC7
PD0~PD7
PE0~PE2
/MCLR
OSC1/CLKIN
OSC2/CLKOUT
VDD
VSS
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I
O
Function Description
Port A, TTL input level / Analog input channel
PA4, Schmitt Trigger input levels, Open drain output
Port B, TTL input level / PB0: External interrupt input PB4~PB7:Interrupt on pin change
Port C, Schmitt Trigger input levels
Port D, Schmitt Trigger input levels / TTL input level
Port E, Schmitt Trigger input levels / TTL input level
Analog input channel
Master Clear, Schmitt Trigger input levels
Oscillator Input/external clock input
Oscillator Output/in RC mode, the CLKOUT pin has 1/4 frequency of CLKIN
Power supply
Ground
7. Memory Map
(A) Register Map
Address
BANK0
00
01
02
03
04
05
06
07
08
09
Indirect Addressing Register
RTCC
PCL
STATUS
MSR
Port A
Port B
Port C
Port D
Port E
Description
This specification are subject to be changed without notice. Any latest information
please preview http;//www.mdtic.com.tw
P. 3
2008/6 Ver. 1.6
MDT10P74(BA)
Address
19
1F
A0~FF
BRREG
ADS1
General purpose register
Description
(1) IAR (Indirect Address Register): R00
(2) RTCC (Real Time Counter/Counter Register): R01
(3) PC (Program Counter): R02, R0A
Write PC --- from PCHLAT
Write PC --- from PCHLAT
LJUMP, LCALL --- from instruction word
RTWI, RET --- from STACK
A11
A10~A8
A7~A0
Write PC --- from ALU
LJUMP, LCALL --- from instruction word
RTWI, RET, RTFI --- from STACK
(4) STATUS (Status register): R03
Bit
0
1
2
3
4
5
Symbol
C
HC
Z
/PF
/TF
RBS0
Carry bit
Half Carry bit
Zero bit
Power down bit
WDT timer overflow bit
Register Bank select bit
0: 00h~7Fh (Bank0)
1: 80h~FFh (Bank1)
7~6
--
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
2008/6 Ver. 1.6
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