P89LPC921FDH

8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM


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The P89LPC920/921/922/9221 are single-chip microcontrollers designed for applications demanding high-integration, low cost solutions over a wide range of performance requirements. The P89LPC920/921/922/9221 is based on a high performance processor architecture that executes instructions in two to four clocks, six times the rate of standard 80C51 devices. Many system-level functions have been incorporated into the P89LPC920/921/922/9221 in order to reduce component count, board space, and system cost.

Features and benefits

Principal features

  • 2 kB/4 kB/8 kB Flash code memory with 1 kB erasable sectors, 64-byte erasable page size, and single byte erase.
  • 256-byte RAM data memory.
  • Two 16-bit counter/timers. Each timer may be configured to toggle a port output upon timer overflow or to become a PWM output.
  • Real-Time clock that can also be used as a system timer.
  • Two analog comparators with selectable inputs and reference source.
  • Enhanced UART with fractional baud rate generator, break detect, framing error detection, automatic address detection and versatile interrupt capabilities.
  • 400 kHz byte-wide I²C-bus communication port.
  • Configurable on-chip oscillator with frequency range and RC oscillator options (selected by user programmed Flash configuration bits). The RC oscillator (factory calibrated to +-1 pct) option allows operation without external oscillator components. Oscillator options support frequencies from 20 kHz to the maximum operating frequency of 18 MHz. The RC oscillator option is selectable and fine tunable.
  • 2.4 V to 3.6 V VDD operating range. I/O pins are 5 V tolerant (may be pulled up or driven to 5.5 V).
  • High drive current (20 mA) on eight I/O pins on the P89LPC9221 (P0.3 to P0.7, P1.4, P1.6, P1.7).

Additional features

  • 15 I/O pins minimum. Up to 18 I/O pins while using on-chip oscillator and reset options.
  • 20-pin TSSOP and DIP packages.
  • A high performance 80C51 CPU provides instruction cycle times of 111 ns to 222 ns for all instructions except multiply and divide when executing at 18 MHz. This is six times the performance of the standard 80C51 running at the same clock frequency. A lower clock frequency for the same performance results in power savings and reduced EMI.
  • In-Application Programming of the Flash code memory. This allows changing the code in a running application.
  • Serial Flash programming allows simple in-circuit production coding. 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 eight 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 uA (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.
  • Oscillator Fail Detect. The watchdog timer has a separate fully on-chip oscillator allowing it to perform an oscillator fail detect function.
  • 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 (160 mA for the P89LPC9221; 80 mA for the P89LPC920/921/922).
  • 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 P89LPC920/921/922/9221 when internal reset option is selected.
  • Four interrupt priority levels.
  • Eight keypad interrupt inputs, plus two additional external interrupt inputs.
  • Second data pointer.
  • Schmitt trigger port inputs.
  • Emulation support.
All information on this product information page is subject to the subsequent disclaimers:
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Show functional diagram

Block diagram: P89LPC920FDH, P89LPC921FDH, P89LPC922FDH, P89LPC922FN
Block diagram: P89LPC920FDH, P89LPC921FDH, P89LPC922FDH, P89LPC922FN

Parametrics of this product

Type numberPackagefmax
(MHz)		FLASH
(kB)		RAM
(B)		I/O
pins		UART
I2C
Timers
PWM
package reference code@ temperature
range
@ VDD
[min](V)		@ VDD
[max]
(V)		@ product description
P89LPC921FDHSOT360-1
(TSSOP20)		18.04.0256.018.01.01.02.02.0TSSOP20F2.43.68-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM

Products / Packages

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
P89LPC921FDHP89LPC921FDH,5129352 737 87512Volume productionSOT360-1
(TSSOP20) 		Tube Dry PackStandard Marking
P89LPC921FDHP89LPC921FDH,5189352 737 87518Volume productionSOT360-1
(TSSOP20) 		Reel Dry Pack, SMD, 13"Standard Marking

The variants in the table below are discontinued. See the table Discontinuation information at the bottom of this page for more information.

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
P89LPC921FDHP89LPC921FDH,1299352 737 87129Withdrawn
Replacement product		SOT360-1
(TSSOP20) 		Standard Marking

Discontinuation information

Type numberOrdering code (12NC)Last-time buy dateLast-time delivery dateReplacement productDN NoticeStatusComments
P89LPC921FDH935273787129DN

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
P89LPC921FDHP89LPC921FDH,512P89LPC921FDHweek 46, 20042.842.5839793281653747E812
P89LPC921FDHP89LPC921FDH,518P89LPC921FDHAlways Pb-free2.842.5839793281653747E812

The variants in the table below are discontinued. See the table Discontinuation information at the bottom of this page for more information.

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
P89LPC921FDHP89LPC921FDH,129P89LPC921FDH11
Quality and reliability disclaimer

Quality and reliability disclaimer

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NXP Semiconductors is providing this data for your convenience only. Please note however that NO WARRANTY, REPRESENTATION, GUARANTEE OR LEGALLY BINDING PRODUCT DESCRIPTION is provided by publishing this informational data, nor does NXP Semiconductors acknowledge or accept any liability related thereto. The documentation and data on NXP Semiconductors products can be found in the data sheets as officially published by NXP Semiconductors. For all purchase of products from NXP Semiconductors the NXP Semiconductors' General Terms and Conditions of Commercial Sale will apply.

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Discontinuation information

Type numberOrdering code (12NC)Last-time buy dateLast-time delivery dateReplacement productDN NoticeStatusComments
P89LPC921FDH935273787129DN

Documentation for this product

TypeFormatTitleDate
Data sheetpdf8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM (v.8.0)2004-12-15
Application notepdfAdding ISP firmware to an LPC900 software project (v.2.0)2009-04-21
Application notepdfOff-line Li-Ion battery charger with P89LPC916 (v.1.0)2004-11-05
Application notepdfPower management for the LPC900 family (v.1.0)2005-03-29
Application notepdfLow-cost A/D-Conversion with Philips LPC microcontrollers Application Note (v.1.0)2002-10-04
Application notepdfAN10218 Philips LPC900 microcontrollers single cell power supply (v.1.0)2003-11-04
Application notepdfLPC900 family in 5V environments (v.1.0)2003-05-21
BrochurepdfLooking for more 32-bit MCU options? Start here. (v.1.0)2009-04-01
Errata sheetpdfErrata sheet P89LPC920 (v.1.2)2008-11-12
Errata sheetpdfErrata sheet P89LPC921 (v.1.2)2008-11-12
Errata sheetpdfErrata sheet P89LPC922 (v.1.3)2008-11-12
Other typezipAdding ISP in source code (v.1.0)2005-01-11
Other typezipCP900 programmer software update V1.5 (v.1.5)2005-01-17
Other typezipAN10337 Adding ISP firmware to an LPC900 software project (v.2.0)2010-04-15
User manualpdfP89LPC920/921/922 USER MANUAL (v.1.0)2003-12-08

Ordering & availability

Type numberOrdering code(12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
P89LPC921FDH9352 737 87512P89LPC921FDH,512ASIAWPI8,255187505/14/2012Buy onlinenot available
   NADIGI-KEY CORPORATION2,0755/24/2012Buy online 
   EUARROW EUROPE2,0525/23/2012Buy online 
   NAWPG AMERICAS INC.1,8755/24/2012Buy online 
   NAARROW ELECTRONICS1,8425/24/2012Buy online 
   NAAVNET EXPRESS1,5555/24/2012Buy online 
   ASIAELEMENT14 APAC5125/24/2012Buy online 
   JAPANCHIP ONE STOPyes05/14/2012Buy online 
P89LPC921FDH9352 737 87518P89LPC921FDH,518ASIAELEMENT14 APAC5125/24/2012Buy onlinenot available
   ASIAWPI70250005/14/2012Buy online 
   JAPANCHIP ONE STOPno05/14/2012Buy online 

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