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Code protection
Two priority levels
Power saving Idle and power down modes
64 K external program memory space
64 K external data memory space
Four 8-bit I/O ports
Full-duplex enhanced UART compatible with the stan-
dard 80C51 and the 80C52
GENERAL DESCRIPTION
The single-chip 8-bit microcontroller is manufactured in
MXIC's advanced CMOS process. This device uses the
same powerful instruction set, has the same architec-
ture, and is pin-to-pin compatible with the existing 80C51.
The added features make it an even more powerful
microcontroller for applications that require clock out-
put, and up/down counting capabilities such as motor
control. It also has a more versatile serial channel that
facilitates multi-processor communications.
PIN CONFIGURATIONS
44 PLCC
VCC
P1.4
P1.3
P1.2
P1.1
P1.0
P0.0
P0.1
P0.2
P0.3
40
39
P0.4
P0.5
P0.6
P0.7
EA
12
34
N.C.
ALE
PSEN
P2.7
P2.6
17
18
P3.6
P3.7
XTAL2
XTAL1
VSS
23
P2.0
P2.1
P2.2
P2.3
N.C.
29
28
P2.4
P2.5
N.C.
1
P1.5
P1.6
P1.7
RST
P3.0
N.C.
P3.1
P3.2
P3.3
P3.4
P3.5
7
6
44
MX10FMAXDQC
P/N:PM0626
REV. 0.1, DEC. 17, 1999
1