參數(shù)資料
型號(hào)： HT82A822R
廠商： Holtek Semiconductor Inc.
英文描述： USB Audio MCU
中文描述： USB音頻控制器
文件頁(yè)數(shù)： 3/39頁(yè)
文件大小： 288K
代理商： HT82A822R
Pin Description
Pin No. Pin Name
I/O
Description
4~1,
48~45
PA0~PA7
I/O
Bidirectional 8-bit input/output port. Each bit can be configured as wake-up input by
mask option. Software instructions determine the CMOS output or Schmitt trigger input
with or without pull-high (by mask option).
5
AVDD2
Audio power amplifier positive power supply, AVDD2 should be external connected to
VDD.
6
ROUT
O
Right driver analog output
7
LOUT
O
Left driver analog output
8
AVSS2
Audio power amplifier negative power supply, ground
9
AVSS1
Audio DAC negative power supply, ground
10
BIAS
O
Connect a capacitor to ground to increase half-supply stability
11
AVDD1
Audio DAC positive power supply
12
DVSS3
Negative digital & I/O power supply, ground
20~13
PB0~PB7
I/O
Bidirectional 8-bit input/output port. Software instructions determine the CMOS output or
Schmitt trigger input with pull-high resistor (determined by pull-high options, nibble op-
tion).
23~21,
30~26
PC0~PC7
I/O
Bidirectional 8-bit input/output port. Software instructions determine the CMOS output or
Schmitt trigger input with pull-high resistor (determined by pull-high options, nibble op-
tion).
24
DVSS2
Negative digital & I/O power supply, ground
25
DVDD2
Positive digital & I/O power supply
36~31
NC
No connection
37
38
OSCI
OSCO
I
O
OSCI, OSCO are connected to an 6MHz or 12MHz crystal/resonator (determined by
software instructions) for the internal system clock
39
RESET
I
Schmitt trigger reset input, active low
40
DVDD1
Positive digital power supply
41
USBDN
I/O
USBDN is USBD- line
USB function is controlled by software control register
42
USBDP
I/O
USBDP is USBD+ line
USB function is controlled by software control register
43
V33O
O
3.3V regulator output
44
DVSS1
Negative digital power supply, ground
Absolute Maximum Ratings
Supply Voltage...........................V
SS
0.3V to V
SS
+6.0V
Storage Temperature............................ 50 C to 125 C
Input Voltage..............................V
SS
0.3V to V
DD
+0.3V
Operating Temperature........................... 40 C to 85 C
I
OL
Total ..............................................................150mA
I
OH
Total............................................................ 100mA
Total Power Dissipation.....................................500mW
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-
ity.
HT82A822R
Rev. 1.10
3
June 29, 2007
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