1
P/N:PM0591
REV. 0.3, APR. 09, 1999
MX10C805X
SINGLE-CHIP 8-BIT MICROCONTROLLER
ADVANCED INFORMATION
FEATURE
High performance CMOS ROM CPU
Operation Voltage 5V
Up to 40MHz operation (3.5MHz to 40MHz)
Three 16-bit timer/counters
256 Bytes of on-chip data RAM
4/8/16/32/64 Kbytes on-chip Program memory
32 Programmable I/O lines
On-chip Watch-Dog-Timer (WDT)
6 interrupt Sources
ROM Code protection
Two priority levels
Power saving Idle and power down modes
64 K external program memory space
64 K external data memory space
Available in PLCC, PQFP, and PDIP package
Four 8-bit I/O ports
Full-duplex enhanced UART compatible with the stan-
dard 80C51 and the 80C52
Extended Temperature Range (-40°C to +85° C)
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
40 PDIP
44 PLCC
44 PQFP
MX10C805X
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
(T2) P1.0
(T2EX) P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
RESET
(RXD) P3.0
(TXD)P3.1
(INT0) P3.2
(INT1) P3.3
(T0) P3.4
(T1) P3.5
(WR) P3.6
(RD) P3.7
XTAL2
XTAL1
VSS
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
VCC
P0.0 (AD0)
P0.1 (AD1)
P0.2 (AD2)
P0.3 (AD3)
P0.4 (AD4)
P0.5 (AD5)
P0.6 (AD6)
P0.7 (AD7)
EA
ALE
PSEN
P2.7 (A15)
P2.6 (A14)
P2.5 (A13)
P2.4 (A12)
P2.3 (A11)
P2.2 (A10)
P2.1 (A9)
P2.0 (A8)
MX10C805X
P1.5
P1.6
P1.7
RST
P3.0
N.C.
P3.1
P3.2
P3.3
P3.4
P3.5
P0.4
P0.5
P0.6
P0.7
EA
N.C.
ALE
PSEN
P2.7
P2.6
P2.5
P1.4
P1.3
P1.2
P1.1
P1.0
N.C
.
VCC
P0.0
P0.1
P0.2
P0.3
P3.6
P3.7
XT
AL2
XT
AL1
VSS
N.C
.
P2.0
P2.1
P2.2
P2.3
P2.4
644
40
39
34
29
7
12
17
18
23
28
1
11
12
22
23
33
34
44
P0.4
P0.5
P0.6
P0.7
EA
N.C.
ALE
PSEN
P2.7
P2.6
P2.5
P1.5
P1.6
P1.7
RST
P3.0
N.C.
P3.1
P3.2
P3.3
P3.4
P3.5
P1.4
P1.3
P1.2
P1.1
P1.0
N.C
.
VCC
P0.0
P0.1
P0.2
P0.3
P3.6
P3.7
XT
AL2
XT
AL1
VSS
N.C
.
P2.0
P2.1
P2.2
P2.3
P2.4
MX10C805X