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MTV112MV32 View Datasheet(PDF) - Myson Century Inc

Part Name
Description
Manufacturer
MTV112MV32 Datasheet PDF : 20 Pages
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MYSON
TECHNOLOGY
MTV112M
(Rev 2.0)
3.0 FUNCTIONAL DESCRIPTION
1. 8051 CPU Core
MTV112M includes all 8051 functions with the following exceptions:
1.1 PSEN, ALE, RD and WR pins are disabled. The external RAM access is restricted to XFRs within
MTV112M.
1.2 Port 0, port 3.3, and ports 3.5 ~ 3.7 are not general-purpose I/O ports. They are dedicated to monitor
control or DAC pins.
1.3 INT1 and T1 input pins are not provided.
1.4 Ports 2.4 ~ 2.7 are shared with DAC pins; ports 3.0 ~ 3.2, and port3.4 are shared with monitor control
pins.
In addition, there are 2 timers, 5 interrupt sources and a serial interface compatible with the standard 8051.
The Txd/Rxd (P3.0/P3.1) pins are shared with DDC interface. INT0/T0 pins are shared with IIC interface. An
extra option can be used to switch the INT0 source from P3.2 to P2.0. This feature maintains an external
interrupt source when IIC interface is enabled.
Note: All registers listed in this document reside in the external RAM area (XFR). For the internal
RAM memory map please refer to the 8051 spec.
Reg name addr
PADMOD 30h (w)
PADMOD 31h (w)
PADMOD 37h (w)
bit7
SINT0
P57E
-
bit6
IICF
P56E
-
bit5
DDCE
P55E
-
bit4
IICE
P54E
-
bit3
DA13E
P53E
-
bit2
DA12E
P52E
-
bit1
DA11E
P51E
-
bit0
DA10E
P50E
MORE
SINT0 = 1
=0
IICF = 1
=0
DDCE = 1
=0
IICE = 1
=0
DA13E = 1
=0
DA12E = 1
=0
DA11E = 1
=0
DA10E = 1
=0
P57E = 1
=0
P56E = 1
=0
P55E = 1
=0
P54E = 1
=0
P53E = 1
=0
P52E = 1
Revision 2.0
INT0 source is pin #21.
INT0 source is pin #12.
Selects 400kHz master IIC speed.
Selects 100kHz master IIC speed.
Pin #10 is HSCL; pin #11 is HSDA.
Pin #10 is P3.0/Rxd; pin #11 is P3.1/Txd.
Pin #12 is ISDA; pin #14 is ISCL.
Pin #12 is P3.2/(INT0*); pin #14 is P3.4/T0.
Pin #25 is DA13.
Pin #25 is P2.4.
Pin #26 is DA12.
Pin #26 is P2.5.
Pin #27 is DA11.
Pin #27 is P2.6.
Pin #28 is DA10.
Pin #28 is P2.7.
Pin #32 is P5.7.
Pin #32 is DA7.
Pin #33 is P5.6.
Pin #33 is DA6.
Pin #34 is P5.5.
Pin #34 is DA5.
Pin #35 is P5.4.
Pin #35 is DA4.
Pin #36 is P5.3.
Pin #36 is DA3.
Pin #37 is P5.2.
-4-
2001/05/18
 

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