sta1050 STMicroelectronics, sta1050 Datasheet - Page 4

• Manufacturer Part Number: sta1050
• Description: Cd-audio One-chip
• Manufacturer: STMicroelectronics

Pin function description
2
Table 1.
4/11
N°
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
DRD15/FLASH_D7
DRD0/GPC0
VDDPAD5
VDDPAD1
RESETN
TESTEN
I2C_SDA/GPB5
I2C_SCL/GPB4
I2C_CRQ
#nc
#nc
PLL_VSS18P
PLL_VDDA33P
#nc
PLL_XTI
PLL_XTO
#nc
PLL_VDDA18P
PLL_VDD18P
FE_VSSA33S
FE_A
FE_C
FE_B
FE_D
FE_E
FE_F
FE_VDDA33S
FE_VDDPAD1
FE_ADCIN1
FE_ADCIN2
FE_VREF_ADC
FE_VREF_OUT
Pin List- LQFP128
Pin function description
Name
Test enable signal (Active low)
I2C CRQ lime or ST7 GPIO PA0
General purpose ADC Vtop reference output
External Vref Pickup (decoupling cap 1nF)
SDRAM Data 15 or FLASH Data 7
SDRAM Data 0 or ST7 GPIO PC0
3.3V
3.3V
Hardware reset input (pull-up)
I2C I/F data or ST7 GPIO PB5
I2C I/F clock or ST7 GPIO PB4
to be connected to ground on PCB
to be connected to ground on PCB
PLL Digital&Analog ground
PLL 3.3 Analog power supply
to be connected to ground on PCB
Crystal input
Crystal output
to be connected to ground on PCB
PLL 1.8V Analog power supply
PLL 1.8V Digital power supply
Ground for servo channels
OPU “A” input
OPU “C” input
OPU “B” input
OPU “D” input
OPU “E” input
OPU “F” input
3.3V Analog for servo channels/ 3.3V for AFE pad ring
(decoupling cap to Vssa)
3.3V for AFE pad ring
General purpose ADC input 1
General purpose ADC input 2
Description
bidir, 3.3V, 2mA
bidir, 3.3V, 2mA
i2c dedicated
i2c dedicated
i2c dedicated
analog out
analog out
analog out
Pin Type
analog in
analog in
analog in
analog in
analog in
analog in
analog in
analog in
analog in
in, 3.3V
in, 3.3V
Vdd
Vdd
Vdd
Vdd
Vdd
Vdd
Vdd
Vss
Vss
STA1050