AD7312
器件资料摘要：
AD7312
1/4 to 1/11 Duty VFD Controller/Driver & Standby Master/Slave
(Preliminary)
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. A2 Dec 29, 2003
1/12
null Features
˙ Serial interface (CLK, STB, D
IN,
D
OUT
)
˙ Key scanning (6× 4 matrices)
˙ Programming display modes (11-digit &
11-segment to 6-digit & 16-segment)
˙ Programming dimming step
˙ High-voltage output (V
DD
-35V max).
˙ 2 channels LED ports.
˙ 2-pin General-purpose input port
˙ Built-in oscillator
˙ No external resistor necessary for driver outputs
(provides PMOS open-drain and pull-low resistor
output)
˙ Remote signal input port
˙ Remote signal output port
˙ 3 STANDBY master output ports (controlled by
remote STANDBY-KEY, STANDBY-KEY and
STANDBY SCAN-KEY)
˙ 8 WAKE UP master output ports (controlled by 2
remote WAKE_UP-KEY, 3 WAKE_UP
SCAN-KEY, remote STANDBY-KEY,
STANDBY-KEY and STANDBY SCAN-KEY)
˙ NEC 6121/6122 infrared protocol support
null General Description
The AD7312 is a VFD (Vacuum Fluorescent Display) controller/driver with STANDBY controller. It is driven
on a 1/4 to 1/11 duty factor (include key scan). It consists of 5 segment output lines, 6 segment/key scan
output lines, 6 grid output lines, 5 segment/grid output drive lines, 2 LED output ports, a display memory, a
control circuit, and a key scan circuit. In addition, it includes 2 input ports, RMIN and SKEY, RMIN receives
the signal form the STANDBY-KEY of remote sensor, SKEY can be controlled by an external switch. Both of
them and STANBY SCAN-KEY can control the output level (High) of PSV port to realize the STANDBY
function. To leave the standby mode, we can use the 2 remote WAKE_UP-KEY, 3 WAKE_UP SCAN-KEY,
remote STANDBY-KEY, STANDBY-KEY and STANDBY SCAN-KEY to control the output level (Low) of PSV
port to realize the Wake Up function. Serial data is input to the AD7312 through a four-line serial interface.
1/4 to 1/11 Duty VFD Controller/Driver & Standby Master/Slave
(Preliminary)
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. A2 Dec 29, 2003
1/12
null Features
˙ Serial interface (CLK, STB, D
IN,
D
OUT
)
˙ Key scanning (6× 4 matrices)
˙ Programming display modes (11-digit &
11-segment to 6-digit & 16-segment)
˙ Programming dimming step
˙ High-voltage output (V
DD
-35V max).
˙ 2 channels LED ports.
˙ 2-pin General-purpose input port
˙ Built-in oscillator
˙ No external resistor necessary for driver outputs
(provides PMOS open-drain and pull-low resistor
output)
˙ Remote signal input port
˙ Remote signal output port
˙ 3 STANDBY master output ports (controlled by
remote STANDBY-KEY, STANDBY-KEY and
STANDBY SCAN-KEY)
˙ 8 WAKE UP master output ports (controlled by 2
remote WAKE_UP-KEY, 3 WAKE_UP
SCAN-KEY, remote STANDBY-KEY,
STANDBY-KEY and STANDBY SCAN-KEY)
˙ NEC 6121/6122 infrared protocol support
null General Description
The AD7312 is a VFD (Vacuum Fluorescent Display) controller/driver with STANDBY controller. It is driven
on a 1/4 to 1/11 duty factor (include key scan). It consists of 5 segment output lines, 6 segment/key scan
output lines, 6 grid output lines, 5 segment/grid output drive lines, 2 LED output ports, a display memory, a
control circuit, and a key scan circuit. In addition, it includes 2 input ports, RMIN and SKEY, RMIN receives
the signal form the STANDBY-KEY of remote sensor, SKEY can be controlled by an external switch. Both of
them and STANBY SCAN-KEY can control the output level (High) of PSV port to realize the STANDBY
function. To leave the standby mode, we can use the 2 remote WAKE_UP-KEY, 3 WAKE_UP SCAN-KEY,
remote STANDBY-KEY, STANDBY-KEY and STANDBY SCAN-KEY to control the output level (Low) of PSV
port to realize the Wake Up function. Serial data is input to the AD7312 through a four-line serial interface.