P89LPC915FDH datasheet(2/72 Pages) PHILIPS

2 / 72 page

Philips Semiconductors

P89LPC915/916/917

8-bit microcontrollers with accelerated two-clock 80C51 core

Product data

Rev. 04 — 17 December 2004

2 of 72

9397 750 14397

• In-Application Programming (IAP-Lite) and byte erase allows code memory to be

used for non-volatile data storage.

• Serial Flash In-Circuit Programming (ICP) allows simple production coding with

commercial EPROM programmers. Flash security bits prevent reading of sensitive

application programs.

• Watchdog timer with separate on-chip oscillator, requiring no external

components. The Watchdog prescaler is selectable from 8 values.

• Low-voltage reset (Brownout detect) allows a graceful system shutdown when

power fails. May optionally be conﬁgured as an interrupt.

• Idle and two different power-down reduced power modes. Improved wake-up from

Power-down mode (a low interrupt input starts execution). Typical power-down

current is 1

µA (total power-down with voltage comparators disabled).

• 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.

• Programmable port output conﬁguration options: quasi-bidirectional, open drain,

push-pull, input-only.

• 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.

• LED drive capability (20 mA) on all port pins. A maximum limit is speciﬁed for the

entire chip.

• Controlled slew rate port outputs to reduce EMI. Outputs have approximately 10 ns

minimum ramp times.

• Only power and ground connections are required to operate the

P89LPC915/916/917 when internal reset option is selected.

• Four interrupt priority levels.

• Five (P89LPC916), six (P89LPC915), or seven (P89LPC917) keypad interrupt

inputs.

• Second data pointer.

• Schmitt trigger port inputs.

• Emulation support.

P89LPC915FDH Datasheet(PDF) 2 Page - NXP Semiconductors