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參數資料
| 型號： | PCF8813 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | (67 + 1) x 102 pixels matrix LCD driver |
| 中文描述： | （67 1）× 102像素矩陣LCD驅動器 |
| 文件頁數： | 52/72頁 |
| 文件大?。?/td> | 446K |
| 代理商： | PCF8813 |
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2004 Mar 05
52
Philips Semiconductors
Product specification
(67 + 1)
×
102 pixels matrix LCD driver
PCF8813
17.5
Interface commands
Instructions additional to those of the instruction set (Table 5) are given in Table 21.
Table 21
Additional instructions
INSTRUCTION
D/C
R/W
COMMAND BYTE
ACTION
D7
D6
D5
D4
D3
D2
D1
D0
Reset
Function set
REF (refresh)
enable OTP circuitry
exit Power-down
switch HVgen on/off to force
refresh of shift register
wait 5 ms for refresh to take effect
set PD = 1 and H = 1
enter MM mode
0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
0
0
0
0
PC
Function set
MM
0
0
0
0
0
0
0
0
1
0
0
1
0
1
1
1
0
1
1
0
17.5.1
D
ISABLE
OTP
COMMAND
This is a special instruction for the PCF8813 which
disables all included OTP circuitry. In this case, all
OTP-related commands are inactive. V
CAL
and MF have
no effect on V
LCD
and manufacture identification
respectively. Once disabled, the mode can only be
enabled via a reset.
17.5.2
M
ODULE MAKER CALIBRATION
Instruction (MM) enters the device into the calibration
mode. This mode enables the shift register for loading and
allows programming of the non-volatile OTP cells to take
place. If the seal bit is set, then this mode cannot be
accessed and the instruction will be ignored. Once in
calibration mode all commands are interpreted as shift
register data. The mode can only be exited by sending
data with bit D7 set to logic 0. Reset will also clear this
mode. Each shift register data byte is preceded by D/C = 0
and has only three significant bits, thus the remaining five
bits are ignored. Bit D7 is the continuation bit (D7 = 1
indicates remain in MM mode; D7 = 0 indicates exit
MM mode). D6 has to be logic 0 until the last bit when the
seal bit is set, in which case this is set to logic 1 (D6 is set
to logic 1 only when the high voltage used for
programming the cells is about to be applied). Bit D0 is the
data bit and its value is shifted into the OTP shift register
on the falling edge of the SCLK clock.
17.5.3
R
EFRESH
The action of the refresh instruction (REF) is to force the
OTP shift register to re-load from the non-volatile OTP
cells. This instruction takes up to 5 ms to complete. During
this time all other instructions may be sent.
In the PCF8813, the refresh instruction is associated with
the power control instruction so that the shift register is
refreshed automatically every time the high voltage
generator is enabled or disabled. However, if this
instruction is sent while in Power-down, the PC bits are
updated but the refreshing is ignored.
17.6
Filling the shift register
An example of the sequence of commands and data for
filling the shift register is shown in Table 22. This example
uses the values V
CAL
=
4 (11100B), MF = 4 (100B is
the Philips identifying code) and the seal bit is 0.
It is assumed that the PCF8813 has just been reset. After
transmitting the last bit the PCF8813 can exit or remain
in MM mode (see Table 22, step 1). When in MM mode,
the interface does not recognize commands in the normal
sense.
After this sequence has been applied, it is possible to
observe the impact of the data shifted in. The sequence
described is not useful for OTP programming because the
number of bits with value = 1 is greater than that allowed
for programming (see Section 17.7). Figure 49 shows the
shift register after this action.
相關PDF資料 |
PDF描述 |
|---|---|
| PCF88132 | (67 + 1) x 102 pixels matrix LCD driver |
| PCF88132DA | (67 + 1) x 102 pixels matrix LCD driver |
| PCF8813U | (67 + 1) x 102 pixels matrix LCD driver |
| PCF8820 | 67 x 101 Grey-scale/ECB colour dot matrix LCD driver |
| PCF8820U | 67 x 101 Grey-scale/ECB colour dot matrix LCD driver |
相關代理商/技術參數 |
參數描述 |
|---|---|
| PCF88132 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:(67 + 1) x 102 pixels matrix LCD driver |
| PCF88132DA | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:(67 + 1) x 102 pixels matrix LCD driver |
| PCF8813U | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:(67 + 1) x 102 pixels matrix LCD driver |
| PCF8820 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:67 x 101 Grey-scale/ECB colour dot matrix LCD driver |
| PCF8820U | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:67 x 101 Grey-scale/ECB colour dot matrix LCD driver |
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