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| 型号： | PICREF-1 |
| 英文描述： | SOT-23, Rail-to-Rail Output, Picoamp Input Current Precision Op Amp; Package: SOT; No of Pins: 5; Temperature Range: -40°C to +85°C |
| 中文描述： | PICREF - 2文件 |
| 文件页数： | 49/64页 |
| 文件大小： | 694K |
| 代理商： | PICREF-1 |
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52
CHAPTER 3
PIN FUNCTION (
PD780308 SUBSERIES)
User’s Manual U11377EJ3V0UD
3.2.9 P110 to P117 (Port 11)
These are 8-bit I/O ports. Besides serving as I/O ports, they function as serial interface data I/O and clock I/O.
The following operating modes can be specified in 1-bit units.
(1) Port mode
These ports function as 8-bit I/O ports. They can be specified as input or output ports in 1-bit units with port
mode register 11 (PM11). When they are used as input ports, internal pull-up resistors can be used by defining
pull-up resistor option register H (PUOH).
When the falling edge is detected on a specified bit of this port, test input flag (KRIF) can be set to 1.
(2) Control mode
These ports function as serial interface data I/O and clock I/O.
(a) SI3, SO3
Serial interface serial data I/O pins.
(b) SCK3
Serial interface serial clock I/O pin.
(c) RxD, TxD
Asynchronous serial interface serial data I/O pins.
Caution When this port is used as a serial interface, the I/O and output latches must be set according
to the function used. For the setting, refer to Table 17-2 Serial Interface Channel 2 Operating
Mode Settings, and Figure 18-3 Serial Operating Mode Register 3 Format.
3.2.10 COM0 to COM3
These are LCD controller/driver common signal output pins. They output common signals under either of the
following conditions:
– when the static mode is selected (COM0 to COM3 outputs)
– when 2-time-division (COM0, COM1 outputs) or 3-time-division (COM0 to COM2 outputs) operation is performed
in 1/2 bias mode
– when 3-time-division (COM0 to COM2 outputs) or 4-time-division (COM0 to COM3 outputs) operation is
performed in 1/3 bias mode
3.2.11
VLC0 to VLC2
These are LCD-driving voltage pins. The mask ROM versions can have split resistors by mask option so that LCD
driving voltage can be supplied inside the VLC0 to VLC2 pins according to the required bias without connecting external
split resistors.
3.2.12
BIAS
This is a LCD driving power supply pin. This pin should be connected to the VLC0 pin to realize user-desired LCD
drive voltages to change resistance division ratios, or should be connected to external resistors together with the VLC0
to VLC2 pins and VSS1 pin to fine-adjust the LCD-driving power voltage.
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