PCF8813 datasheet(50/72 Pages) PHILIPS

50 / 72 page

2004 Mar 05

Philips Semiconductors

Product speciﬁcation

(67 + 1)

× 102 pixels matrix LCD driver

PCF8813

Table 19 VCAL codes and associated nominal calibration

voltage when the temperature coefﬁcient is set

to TC3

17.2

Manufacturer identity

The second OTP feature defines the manufacturer

identity. A 3-bit code MF[2:0] is used to define this

parameter. The default manufacturer identity is

MF[2:0] = 000.

17.3

Seal bit

Module maker programming is performed in a special

mode; the calibration mode MM. This mode is entered via

the interface command, MM. To prevent wrongful

programming, a seal bit prevents the device from entering

the calibration mode. This seal bit, once programmed,

cannot be reversed, thus further changes in programmed

values are not possible. However it is possible to disable

all programmed values by applying the disable OTP

command.

Applying the programming voltages when not in MM mode

will have no effect on the programmed values.

Table 20 Seal bit deﬁnition

17.4

One time programming

17.4.1

ARCHITECTURE

The OTP circuitry in the PCF8813 contains nine bits of

data: five for VLCD calibration, three for the manufacturer

identity and one for the seal bit. The circuitry for 1-bit is

called an OTP slice. Each OTP slice consists of two main

parts: the OTP cell (a non-volatile memory cell) and the

shift register cell (a flip-flop). The OTP cells are accessible

only through their shift register cells; both reading-from

and writing-to the OTP cells are performed with the shift

the rest of the circuit. The basic OTP architecture is shown

in Fig.48.

VCAL

VCAL[4:0]

VLCD

CALIBRATION

(mV)

00000

0 (default)

00001

+25.6

00010

+51.2

00011

+76.8

00100

+102.4

00101

+128.0

00110

+153.6

00111

+179.2

01000

+204.8

01001

+230.4

+10

01010

+256.0

+11

01011

+281.6

+12

01100

+307.2

+13

01101

+332.8

+14

01110

+358.4

+15

01111

+384.0

−1

11111

−25.6

−2

11110

−51.2

−3

11101

−76.8

−4

11100

−102.4

−5

11011

−128.0

−6

11010

−153.6

−7

11001

−179.2

−8

11000

−204.8

−9

10111

−230.4

−10

10110

−256.0

−11

10101

−281.6

−12

10100

−307.2

−13

10011

−332.8

−14

10010

−358.4

−15

10001

−384.0

−16

10000

−409.6

SEAL BIT

ACTION

possible to enter calibration mode

calibration mode disabled

PCF8813 bảng dữ liệu(PDF) 50 Page - NXP Semiconductors

PCF8813 bảng dữ liệu(HTML) 50 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72

bảng dữ liệu tải về

Link URL