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PDF MA014B Data sheet ( Hoja de datos )
| Número de pieza | MA014B | |
| Descripción | 8-bit I/O type micro-controller | |
| Fabricantes | Megawin | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MA014B (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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Features
MA014B Preliminary Spec Ver 0.21
8-bit I/O type micro-controller with IR function
Single chip 8-bit CPU
Operation voltage: 1.8V to 3.6V
Memory:
ROM 48K Bytes
Data RAM: 128 Bytes (shared with stack)
8 inputs with pull high resister, 4 open-drain
output pins with pull high resistor, 4 output
pins with NMOS/CMOS selection, 2 quasi-
bi-directional NMOS output pins with pull
high resistor.
1 dedicated push pull output
Stop mode: micro-controller no operation
(Oscillators stop oscillating)
Watchdog timer built-in
One re-loadable 8-bit timer
Build-in low voltage detector (Max. 2.4V)
and low voltage reset (typical voltage:
below 1.85V)
Oscillator (455K resonator or 3.58M/4M
crystal)
Selection Information
MA014B
ROM
(Program ROM)
48K x 8-bit
(48K x 8-bit)
I/O 19
Application Field
Toy controller
General IR controller
MEGAWIN
MA014B Series Technical Summary
1
1 page  
Special Function Register (SFR)
The address 00E0H to 00FFH are reserved for special function registers (SFR). The SFR is used to
control or store the status of I/O, system clock and other peripheral.
※ All SFRs are not supported by bit-manipulation instructions.
SFR (special function register): 00E0H ~ 00FFH (page 0 area)
Address Content
Default Address Content
00E0 MCLKmgr
---0---0 00F0
00E1 RESOK
-------- 00F1 P0pad
00E2 IRQen
---0---0 00F2
00E3 EVTflag & EVTclr -X00---0
(Hard_rst)
00F3
00E4
-------- 00F4
00E5
-------- 00F5 P1obuf
00E6
-------- 00F6 P1opd
00E7
-------- 00F7 P1plh
00E8 TM0
00000000 00F8
00E9 TM0_CTL
00000000 00F9
00EA
-------- 00FA IRO
00EB
-------- 00FB
00EC
-------- 00FC P2obuf
00ED
-------- 00FD P2pad
00EE
-------- 00FE
00EF
-------- 00FF
Default
--------
XXXXXXXX
--------
--------
--------
11111111
1111----
00000000
--------
--------
0-------
--------
------11
------XX
--------
--------
Power On Reset
Low Voltage Reset
Hard_rst
RSTn
Sys_rst
WDT Reset
Read
EVTflag
Low Voltage
Warning
System Reset Architecture
Data bus_bit6
MEGAWIN
MA014B Series Technical Summary
5
5 Page 
Port 2 pad
Address
00FDH
Name
P2pad
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
P21
Bit 0 R W
P20 -
When P2 is used as an input, the corresponding bit of P2obuf must be 1. In this condition, the
corresponding pin is pulled to high by the internal pull-high resistor and it can be pulled to low by an
external source. Reading P2pad.n would always read the logic value from pad.
※ Bit-manipulation instructions are not available on this register.
IRO Buffer
Address
Name
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 R W
00FAH
IRO
IR - - - - - - - -
Note: The IRO pin output status is the inverted value of IRO.7. So, write “1” to bit7 of the IRO buffer
the IRO will output low voltage and write “0” to bit7 of the IR buffer the IRO will output high voltage.
Programming Notice
The status after different reset condition is listed below:
Power on reset
CPU /RES pin reset
SRAM Data
Unknown
Unchanged
CPU Register
Unknown
Unknown
Special Function Register
Default value
Default value
Mask Option
WDT
Enable / Disable
MEGAWIN
MA014B Series Technical Summary
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet MA014B.PDF ] | |
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