Electronic Components Datasheet Search |
|
PCF2105 Datasheet(PDF) 5 Page - NXP Semiconductors |
|
PCF2105 Datasheet(HTML) 5 Page - NXP Semiconductors |
5 / 48 page 1998 Jul 30 5 Philips Semiconductors Product specification LCD controller/driver PCF2105 6 PINNING SYMBOL PAD I/O DESCRIPTION OSC 1 I oscillator/external clock input VDD 2 − logic supply voltage SA0 3 I I2C-bus address selection input VSS 4 − logic ground R8 to R5 5 to 8 O LCD row driver outputs R32 to R29 9 to 12 O LCD row driver outputs R24 to R17 13 to 20 O LCD row driver outputs C60 to C1 21 to 80 O LCD column driver outputs R9 to R16 81 to 88 O LCD row driver outputs R25 to R28 89 to 92 O LCD row driver outputs R1 to R4 93 to 96 O LCD row driver outputs SCL 97 I I2C-bus serial clock input E 98 I data bus clock input RS 99 I register select input R/W 100 I read/write input T1 101 I test input DB7 to DB0 102 to 109 I/O 8-bit bidirectional data bus input/output SDA 110 I/O I2C-bus serial data input/output VLCD 111 I LCD supply voltage input 7 PAD FUNCTIONS 7.1 RS: Register Select (parallel control) Bit RS selects the register to be accessed for read and write when the device is controlled by the parallel interface. RS = 0 selects the instruction register for write and the busy flag and address counter for read. RS = 1 selects the data register for both read and write. There is an internal pull-up resistor on pad RS. 7.2 R/W: read/write (parallel control) R/W selects either the read (R/W = 1) or write (R/W=0) operation when control is by the parallel interface. There is an internal pull-up resistor on pad R/W. 7.3 E: data bus clock (parallel control) Pad E should be HIGH to signal the start of a read or write operation when the device is controlled by the parallel interface. Data is clocked in or out of the chip on the falling edge of the clock. Note that pad E must be connected to VSS (logic 0) when I2C-bus control is used. 7.4 DB7 to DB0: data bus (parallel control) The bidirectional, 3-state data bus transfers data between the system controller and the PCF2105. DB7 acts as the busy flag, signalling that internal operations are not yet completed. In 4-bit operations, DB7 to DB4 are used and DB3 to DB0 must be left open-circuit. There is an internal pull-up resistor on each of the data lines. Note that pads DB7 to DB0 must be left open-circuit when I2C-bus control is used. 7.5 C60 to C1: column driver outputs Pads C60 to C1 output the data for pairs of columns. This arrangement permits optimized Chip-On-Glass (COG) layout for 4-line by 12 characters. 7.6 R32 to R1: row driver outputs Pads R32 to R1 output the row select waveforms to the left and right halves of the display. 7.7 VLCD: LCD power supply Negative power supply for the liquid crystal display. |
Similar Part No. - PCF2105 |
|
Similar Description - PCF2105 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |