| 数据搜索系统,热门电子元器件搜索 |
|
STFPC320 数据表(PDF) 12 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
STFPC320 数据表(HTML) 12 Page - STMicroelectronics |
|
12 / 78 page ![]() Pin settings STFPC320 12/78 3.2 Pin description Table 2. Pin description Pin N° Name Type Description 1 OSC IN Connect to an external resistor of value 33 k Ω ± 1% 2 SW1 IN General purpose switch input port. 3 SW2 IN General purpose switch input port. 4 MUTE OUT High level means mute status for audio. Low level stands for normal working. 5STBY OUT Pin to control power to the main board. High level means standby status. Low level stands for normal working. Active high. 6, 38 VDD SUPPLY 3.3 V ± 10%. Core main supply voltage. 7 XIN IN Oscillator input pin. 32.768 KHz crystal. 8 XOUT OUT Oscillator output pin. 32.768 KHz crystal. 9 GND SUPPLY Connect this pin to system GND. 10,11 KEY1, KEY2 IN Input data to these pins from external keyboard are latched at end of the display cycle (maximum keyboard size is 12 x 2). 12 READY IN High level on this pin means that main board chip has been working normally. Connect an external pull down resistor of 10k Ω on this pin. 13 IR_DATA_IN IN Remote control input. Connect to IR photodiode. 14 to 25 SEG1/KS1 to SEG12/KS12 OUT Segment output pins (dual function as key source). 26 VSS SUPPLY VFD outputs high voltage pull-down level. VDD- 33.3 V max. 27 to 34 SEG13/GRID16 to SEG20/GRID9 OUT These pins are selectable for segment or grid driving. 35-37 GRID8 to GRID6 OUT Grid output pins. 39 RESET_N IN Active low reset input. 40-44 GRID5 to GRID1 OUT Grid output pins. 45 SDA IN/OUT Serial data in/out. Connect to 3.3 V through an external pull-up resistor. 46 SCL IN Serial clock input. Connect to 3.3 V through an external pull-up resistor. 47 PIN_AV8 IN A rising edge transition on this input will signal wake-up operation. This signal comes from the SCART interface. The micro processor can use this signal to start the recording or take other actions. 48 IRQ_N/SQW OUT Interrupt/square wave output (open drain). A pull up resistor of 10 k Ω must be connected on this pin. 49, 50, 51, 52 LED4, LED3, LED2, LED1 OUT CMOS sink outputs (20 mA max). |
|
链接网址 |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 数据表链接 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |