PCF8536 Universal LCD driver for low multiplex rates including a 6 channel PWM generator Rev. 3 2 November 2021 Product data sheet 1 General description The PCF8536 is a peripheral device which interfaces to almost any Liquid Crystal Display 1 (LCD) with low multiplex rates. It generates the drive signals for any multiplexed LCD containing up to eight backplanes, up to 44 segments, and up to 320 elements. The PCF8536 is compatible with most microcontrollers and communicates via the two-line 2 bidirectional I C-bus (PCF8536AT) or a three line unidirectional SPI-bus (PCF8536BT). Communication overheads are minimized using a display RAM with auto-incremented addressing. The PCF8536 features an on-chip PWM controller for LED illumination. Up to six independent channels can be configured. Each channel has 128 levels allowing the possibility for two RGB controllers. Each of them provides over 2 million colors. Each channel can also be used for static drive. 2 Features and benefits Single-chip 320 segment LCD controller and driver with 6 channel PWM generator 6 channel PWM generator for backlight LED illumination Selectable display bias configuration Wide range for digital power supply: from 1.8 V to 5.5 V Wide LCD supply range: from 2.5 V for low threshold LCDs and up to 9.0 V for high threshold twisted nematic LCDs Low power consumption Selectable backplane drive configuration: 4, 6, or 8 backplane multiplexing LCD and logic supplies may be separated 320-bit RAM for display data storage 6 PWM outputs with a 7-bit resolution (128 steps) and drivers for external transistors Programmable PWM frame frequency to avoid LCD backlight flickering 2 400 kHz I C-bus interface (PCF8536AT) 5 MHz SPI-bus interface (PCF8536BT) Programmable frame frequency in the range of 60 Hz to 300 Hz in steps of 10 Hz factory calibrated 320 segments driven allowing: up to 40 7-segment alphanumeric characters up to 20 14-segment alphanumeric characters any graphics of up to 320 elements Manufactured in silicon gate CMOS process 1 The definition of the abbreviations and acronyms used in this data sheet can be found in Section 18.NXP Semiconductors PCF8536 Universal LCD driver for low multiplex rates including a 6 channel PWM generator 3 Applications White goods and consumer products 4 Ordering information Table 1.Ordering information Type number Interface Topside Package type mark Name Description Version 2 PCF8536AT/1 I C-bus PCF8536AT TSSOP56 plastic thin shrink small outline package 56 SOT364-1 leads 0.5 mm pitch 14 mm x 6.1 mm x 1.2 mm body PCF8536BT/1 SPI-bus PCF8536BT TSSOP56 plastic thin shrink small outline package 56 SOT364-1 leads 0.5 mm pitch 14 mm x 6.1 mm x 1.2 mm body 4.1 Ordering options Table 2.Ordering options 1 Type number Orderable part number Package Packing method Minimum Temperature order quantity 2 PCF8536AT/1 PCF8536AT/1,118 reel 13 inch q1 non 2000 T = -40 C to +85 C TSSOP56 amb dry pack PCF8536AT/1Y TSSOP56 reel 13 inch q1 dry 2000 T = -40 C to +85 C amb pack 3 PCF8536BT/1 PCF8536BT/1,118 TSSOP56 reel 13 inch q1 non 2000 T = -40 C to +85 C amb dry pack PCF8536BT/1Y TSSOP56 reel 13 inch q1 dry 2000 T = -40 C to +85 C amb pack 1 Standard packing quantities and other packaging data are available at www.nxp.com/packages/. 2 Discontinuation Notice 202107021DN - drop in replacement is PCF8536AT/1Y - this is documented in PCN202102010F01. 3 Discontinuation Notice 202107021DN - drop in replacement is PCF8536BT/1Y - this is documented in PCN202102010F01. PCF8536 All information provided in this document is subject to legal disclaimers. NXP B.V. 2021. All rights reserved. Product data sheet Rev. 3 2 November 2021 2 / 76