Philips PTN3501 manual

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Table of contents for the manual

  • Page 1

      PTN3501 Maintenance and control device Product specification Supersedes data of 2000 Nov 22 2001 Jan 17 INTEGRA TED CIRCUITS[...]

  • Page 2

    Philips Semiconductors Product specification PTN3501 Maintenance and control device 2 2001 Jan 17 853-2227 25436 FEA TURES • I 2 C to parallel port expander • Internal 256x8 E 2 PROM • Self timed write cycle (5 ms typ.) • 16 byte page write operation • Controlled pull-up on address lines • Low voltage V CC range of +2.5 V to +3.6 V • [...]

  • Page 3

    Philips Semiconductors Product specification PTN3501 Maintenance and control device 2001 Jan 17 3 CHARACTERISTICS OF THE I 2 C-BUS The I 2 C-bus is for 2-way , 2-line communication between different ICs or modules. The two lines are a serial data line (SDA) and a serial clock line (SCL). Both lines must be connected to a positive supply via a pull-[...]

  • Page 4

    Philips Semiconductors Product specification PTN3501 Maintenance and control device 2001 Jan 17 4 Acknowledge (see Figure 6) The number of data bytes transferred between the start and the stop conditions from transmitter to receiver is not limited. Each byte of eight bits is followed by one acknowledge bit. The acknowledge bit is a HIGH level put o[...]

  • Page 5

    Philips Semiconductors Product specification PTN3501 Maintenance and control device 2001 Jan 17 5 Addressing For addressing, see Figure 8. S 0 A5 A4 A3 A2 A1 A0 0 A A5 0 A S 1 A4 A3 A2 A1 A0 a. b. (a) I/O EXP ANDER (b) MEMORY SW00648 SLA VE ADDRESS SLA VE ADDRESS Figure 8. PTN3501 slave addresses Asynchronous Start Following any Start condition on [...]

  • Page 6

    Philips Semiconductors Product specification PTN3501 Maintenance and control device 2001 Jan 17 6 Interrupt (see Figs 1 1 and 12) The PTN3501 provides an open drain output (INT ) which can be fed to a corresponding input of the microcontroller . This gives these chips a type of master function which can initiate an action elsewhere in the system. A[...]

  • Page 7

    Philips Semiconductors Product specification PTN3501 Maintenance and control device 2001 Jan 17 7 Quasi-bidirectional I/Os (see Figure 13) A quasi-bidirectional I/O can be used as an input or output without the use of a control signal for data direction. At power-on the I/Os are HIGH. In this mode, only a current source to V DD is active. An additi[...]

  • Page 8

    Philips Semiconductors Product specification PTN3501 Maintenance and control device 2001 Jan 17 8 MEMOR Y OPERA TIONS Write operations Write operations require an additional address field to indicate the memory address location to be written. The address field is eight bits long providing access to any one of the 256 words of memory . There are two[...]

  • Page 9

    Philips Semiconductors Product specification PTN3501 Maintenance and control device 2001 Jan 17 9 Read operations PTN3501 read operations are initiated in an identical manner to write operations with the exception that the memory slave address’ R/W bit is set to a one. There are three types of read operations; current address, random and sequenti[...]

  • Page 10

    Philips Semiconductors Product specification PTN3501 Maintenance and control device 2001 Jan 17 10 ABSOLUTE MAXIMUM RA TINGS Absolute Maximum Ratings are thos e values beyond which damage to the device may occur . Functional operation under thes e conditi ons is not implied. SYMBOL P ARAMETER MIN MAX UNIT V CC Supply V oltage –0.5 4.0 V V I Input[...]

  • Page 11

    Philips Semiconductors Product specification PTN3501 Maintenance and control device 2001 Jan 17 11 I 2 C-BUS TIMING CHARACTERISTICS SYMBOL P ARAMETER MIN. TYP . MAX. UNIT I 2 C-bus timing (see Figure 19; Note 1) f SCL SCL clock frequency – – 400 kHz t SW tolerable spike width on bus – – 50 ns t BUF bus free time 1.3 – – µ s t SU;ST A S[...]

  • Page 12

    Philips Semiconductors Product specification PTN3501 Maintenance and control device 2001 Jan 17 12 POWER-UP TIMING SYMBOL P ARAMETER MAX. UNIT t PUR 1 Power-up to Read Operation 1 ms t PUW 1 Power-up to Write Operation 5 ms NOTE: 1. t PUR and t PUW are the delays required from the time V CC is stable until the specified operation can be initiated. [...]

  • Page 13

    Philips Semiconductors Product specification PTN3501 Maintenance and control device 2001 Jan 17 13 SOLDERING Introduction There is no soldering method that is ideal for all IC packages. W ave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However , wave soldering is not always s[...]

  • Page 14

    Philips Semiconductors Product specification PTN3501 Maintenance and control device 2001 Jan 17 14 TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT360-1[...]

  • Page 15

    Philips Semiconductors Product specification PTN3501 Maintenance and control device 2001 Jan 17 15 Definitions Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition [...]