2

P/N:PM0625 Specifications subject to change without notice, contact your sales representatives for the most update information. REV. 1.0, JUL. 01, 2005

MX10EXA

1

XA16-bitMicrocontrollerFamily

64K Flash/2K RAM, Watchdog, 2UARTs

FEATURE

• 4.5V to 5.5V

• 64K bytes of on-chip Flash program memory with In-

System Programming capability

• Five Flash blocks = two 8k byte blocks and three 16k

byte blocks

• Single supply voltage In-System Programming of the

Flash memory, (VPP=VDD or VPP=12V if desired)

• Boot ROM contains low level Flash programming

routines for In-Application Programming and a default

serial loader using the UART

• 2048 bytes of on-chip data RAM

• Supports off-chip program and data addressing up to 1

megabyte (20 address lines)

• Three standard counter/timers with enhanced features

All timers have a toggle output capability

• Watchdog timer

• Two enhanced UARTs with independent baud rates

• Seven software interrupts

• Four 8-bit I/O ports, with 4 programmable output

configurations for each pin

• 30 MHz operating frequency at 5V

• Power saving operating modes: Idle and Power-

Down.Wake-Up from power-down via an external inter-

rupt is supported.

• 44-pin PLCC (MX10EXAQC) Commercial grade

• 44-pin LQFP (MX10EXAUC) Commercial grade

• 44-pin PLCC (MX10EXAQI) Industrial grade

• 44-pin LQFP (MX10EXAUI) Industrial grade

GENERAL DESCRIPTION

The MX10EXA is a member of Philips’ 80C51 XA

(eXtended Architecture) family of high performance 16-

bit single-chip microcontrollers.

The MX10EXA contains 64k bytes of Flash program

memory, and provides three general purpose timers/

counters, a watchdog timer, dual UARTs, and four gen-

eral purpose I/O ports with programmable output con-

figurations.

PIN CONFIGURATIONS

44 PLCC

A default serial loader program in the Boot ROM allows

In-System Programming (ISP) of the Flash memory with-

out the need for a loader in the Flash code. User pro-

grams may erase and reprogram the Flash memory at

will through the use of standard routines contained in

the Boot ROM (In-Application Programming).

MX10EXAUC

P1.5/TxD1

P1.6/T2

P1.7/T2EX

RST

P3.0/RxD0

NC

P3.1/TxD0

P3.2/INT0

P3.3/INT1

P3.4/T0

P3.5/T1/BUSW

P0.4/A8D4

P0.5/A9D5

P0.6/A10D6

P0.7/A11D7

EA/VPP/WAIT

NC

ALE

PSEN

P2.7/A19D15

P2.6/A18D14

P2.5/A17D13

44

34

33

23

1

11

12

22

44 LQFP

MX10EXAQC

P1.5/TxD1

P1.6/T2

P1.7/T2EX

RST

P3.0/RxD0

NC

P3.1/TxD0

P3.2/INT0

P3.3/INT1

P3.4/T0

P3.5/T1/BUSW

P0.4/A8D4

P0.5/A9D5

P0.6/A10D6

P0.7/A11D7

EA/VPP/WAIT

NC

ALE

PSEN

P2.7/A19D15

P2.6/A18D14

P2.5/A17D13

644

40

39

34

29

7

12

17

18

23

28

1