P89LPC9102_9103_9107_3 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 03 — 10 July 2007 2 of 61
NXP Semiconductors
P89LPC9102/9103/9107
8-bit microcontrollers with two-clock accelerated 80C51 core
n In-Application Programming (IAP-Lite) and byte erase allows code memory to be used
for non-volatile data storage.
n Serial flash ICP allows simple production coding with commercial EPROM
programmers. Flash security bits prevent reading of sensitive application programs.
n Watchdog timer with separate on-chip oscillator, requiring no external components.
The watchdog prescaler is selectable from eight values.
n Low voltage reset (Brownout detect) allows a graceful system shutdown when power
fails. May optionally be configured as an interrupt.
n Idle mode and two different reduced power Power-down modes. Improved wake-up
from Power-down mode (a LOW interrupt input starts execution). Typical Power-down
mode current is less than 1 µA (total Power-down mode with voltage comparators
disabled).
n Active-LOW reset. On-chip power-on reset allows operation without external reset
components. A reset counter and reset glitch suppression circuitry prevent spurious
and incomplete resets. A software reset function is also available.
n Programmable port output configuration options: quasi-bidirectional, open drain,
push-pull, input-only.
n Port ‘input pattern match’ detect. Port 0 may generate an interrupt when the value of
the pins match or do not match a programmable pattern.
n LED drive capability (20 mA) on all port pins. A maximum limit is specified for the
entire chip.
n Controlled slew rate port outputs to reduce EMI. Outputs have approximately 10 ns
minimum ramp times.
n Only power and ground connections are required to operate the
P89LPC9102/9103/9107 when internal reset option is selected.
n Four interrupt priority levels.
n Two keypad interrupt inputs.
n Second data pointer.
n External clock input.
n Clock output (P89LPC9102/9107).
n Schmitt trigger port inputs.
n Emulation support.
3. Product comparison overview
Table 1 highlights the differences between these two devices. For a complete list of device
features, please see Section 2 “Features”.
Table 1. Product comparison overview
Type number UART T0 toggle/PWM T1 toggle/PWM CLKOUT
P89LPC9102 - X X X
P89LPC9103 X - - -
P89LPC9107 XXXX
