P89LPC915FDH datasheet(2/75 Pages) NXP

2 / 75 page

P89LPC915_916_917_5

Product data sheet

Rev. 05 — 15 December 2009

2 of 75

NXP Semiconductors

P89LPC915/916/917

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

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

commercial EPROM programmers. Flash security bits prevent reading of sensitive

application programs.

I Watchdog timer with separate on-chip oscillator, requiring no external components.

The Watchdog prescaler is selectable from 8 values.

I Low voltage brownout detect allows a graceful system shutdown when power fails.

May optionally be conﬁgured as an interrupt.

I 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).

I 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.

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

push-pull, input-only.

I 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.

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

entire chip.

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

minimum ramp times.

I Only power and ground connections are required to operate the P89LPC915/916/917

when internal reset option is selected.

I Four interrupt priority levels.

I Five (P89LPC916), six (P89LPC915), or seven (P89LPC917) keypad interrupt inputs.

I Second data pointer.

I Schmitt trigger port inputs.

I Emulation support.

Product comparison overview

Table 1 highlights the differences between these three devices. For a complete list of

device features, please see Section 2 “Features”.

Table 1.

Product comparison overview

Type number

Comparator 2

output

SPI

T1 toggle/PWM CLKOUT

INT1

KBI

P89LPC915

P89LPC916

P89LPC917

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