參數(shù)資料
型號(hào): PIC16C621AT-40/SS
廠(chǎng)商: Microchip Technology
文件頁(yè)數(shù): 24/89頁(yè)
文件大?。?/td> 0K
描述: IC MCU OTP 1KX14 COMP 20SSOP
標(biāo)準(zhǔn)包裝: 1,600
系列: PIC® 16C
核心處理器: PIC
芯體尺寸: 8-位
速度: 40MHz
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,POR,WDT
輸入/輸出數(shù): 13
程序存儲(chǔ)器容量: 1.75KB(1K x 14)
程序存儲(chǔ)器類(lèi)型: OTP
RAM 容量: 96 x 8
電壓 - 電源 (Vcc/Vdd): 2.5 V ~ 5.5 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 20-SSOP(0.209",5.30mm 寬)
包裝: 帶卷 (TR)
其它名稱(chēng): PIC16C621AT40/SS
30
AT90S1200
0838H–AVR–03/02
Port B as General Digital I/O
All eight pins in Port B have equal functionality when used as digital I/O pins.
PBn, General I/O pin: The DDBn bit in the DDRB Register selects the direction of this
pin, if DDBn is set (one), PBn is configured as an output pin. If DDBn is cleared (zero),
PBn is configured as an input pin. If PORTBn is set (one) and the pin is configured as an
input pin, the MOS pull-up resistor is activated. To switch the pull-up resistor off,
PORTBn has to be cleared (zero) or the pin has to be configured as an output pin. The
Port B pins are tri-stated when a reset condition becomes active, even if the clock is not
active.
Note:
n: 7,6...0, pin number.
Alternate Functions of Port B
The alternate pin functions of Port B are:
SCK – Port B, Bit 7
SCK, Clock Input pin for memory up/downloading.
MISO – Port B, Bit 6
MISO, Data Output pin for memory uploading.
MOSI – Port B, Bit 5
MOSI, Data Input pin for memory downloading.
AIN1 – Port B, Bit 1
AIN1, Analog Comparator Negative Input. When configured as an input (DDB1 is
cleared [zero]) and with the internal MOS pull-up resistor switched off (PB1 is cleared
[zero]), this pin also serves as the negative input of the On-chip Analog Comparator.
AIN0 – Port B, Bit 0
AIN0, Analog Comparator Positive Input. When configured as an input (DDB0 is cleared
[zero]) and with the internal MOS pull-up resistor switched off (PB0 is cleared [zero]),
this pin also serves as the positive input of the On-chip Analog Comparator.
Table 9. DDBn Effect on Port B Pins
DDBn
PORTBn
I/O
Pull-up
Comment
0
Input
No
Tri-state (High-Z)
0
1
Input
Yes
PBn will source current if ext. pulled low.
1
0
Output
No
Push-pull Zero Output
1
Output
No
Push-pull One Output
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PIC16C621T-04E/SS 功能描述:8位微控制器 -MCU 1.75KB 80 RAM 13 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線(xiàn)寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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