 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
PCF2116AHZ Datasheet(PDF) 7 Page - NXP Semiconductors |
|
||||||||||||||||||||||||||||||
PCF2116AHZ Datasheet(HTML) 7 Page - NXP Semiconductors |
|
|
7 / 64 page  1997 Apr 07 7 Philips Semiconductors Product specification LCD controller/drivers PCF2116 family 7 PIN FUNCTIONS 7.1 RS: register select (parallel control) RS selects the register to be accessed for read and write when the device is controlled by the parallel interface. RS = logic 0 selects the instruction register for write and the Busy Flag and Address Counter for read. RS = logic 1 selects the data register for both read and write. There is an internal pull-up on pin RS. 7.2 R/W: read/write (parallel control) R/W selects either the read (R/W = logic 1) or write (R/W = logic 0) operation when control is by the parallel interface. There is an internal pull-up on this pin. 7.3 E: data bus clock The E pin is set 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 negative edge of the clock. Note that this pin must be tied to logic 0 (VSS) when I2C-bus control is used. 7.4 DB0 to DB7: data bus The bidirectional, 3-state data bus transfers data between the system controller and the PCF2116. DB7 may be used as the Busy Flag, signalling that internal operations are not yet completed. In 4-bit operations the 4 higher order lines DB4 to DB7 are used; DB0 to DB3 must be left open circuit. There is an internal pull-up on each of the data lines. Note that these pins must be left open circuit when I2C-bus control is used. 7.5 C1 to C60: column driver outputs These pins output the data for pairs of columns. This arrangement permits optimized chip-on-glass (COG) layout for 4-line by 12 characters. 7.6 R1 to R32: row driver outputs These pins 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. This may be generated on-chip or supplied externally. 7.8 V0: VLCD control input The input level at this pin determines the generated VLCD output voltage. 7.9 OSC: oscillator When the on-chip oscillator is used this pin must be connected to VDD. An external clock signal, if used, is input at this pin. 7.10 SCL: serial clock line Input for the I2C-bus clock signal. 7.11 SDA: serial data line Input/output for the I2C-bus data line. 7.12 SA0: address pin The hardware sub-address line is used to program the device sub-address for 2 different PCF2116s on the same I2C-bus. 7.13 T1: test pad Must be connected to VSS. Not user accessible. 8 FUNCTIONAL DESCRIPTION (see Fig.1) 8.1 LCD supply voltage generator, PCF2114x and PCF2116x The on-chip voltage generator is controlled by bit G of the ‘Function set’ instruction and V0. V0 is a high-impedance input and draws no current from the system power supply. Its range is between VSS and VDD − 1 V. When V0 is connected to VDD the generator is switched off and an external voltage must be supplied to pin VLCD. This may be more negative than VSS. When G = logic 1 the generator produces a negative voltage at pin VLCD, controlled by the input voltage at pin V0. The LCD operating voltage is given by the relationship: VOP = 1.8VDD − V0 Where: VOP =VDD − VLCD VLCD =V0 − (0.8VDD) When G = logic 0, the generated output voltage VLCD is equal to V0 (between VSS and VDD). In this instance: VOP =VDD − V0 When VLCD is generated on-chip the VLCD pin should be decoupled to VDD with a suitable capacitor. VDD and V0 must be selected to limit the maximum value of VOP to 9 V. Figure 3 shows the two generator control characteristics. |
Similar Part No. - PCF2116AHZ |
|
Similar Description - PCF2116AHZ |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
