參數(shù)資料
型號： ST7FLCD1G9M1
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PDSO28
封裝： ROHS COMPLIANT, SO-28
文件頁數(shù)： 33/96頁
文件大?。?/td> 846K
代理商： ST7FLCD1G9M1
ST7FLCD1
I/O Ports
7.4
Port B
Each Port B bit can be used as the Analog source to the Analog-to-Digital Converter.
Only one I/O line at a time must be configured as an analog input. Pins levels are all limited to 5V.
All unused I/O lines should be tied to an appropriate logic level (either VDD or VSS).
Since ADC and microprocessor are on the same chip and if high precision is required, the user
should not switch heavily loaded signals during conversion. Such switching will affect the supply
voltages used as analog references. The conversion accuracy depends on the quality of power
supplies (VDD and VSS). The user must take special care to ensure that a well regulated reference
voltage is present on pins VDD and VSS (power supply variations must be less than 3.3 V/ms). This
implies, in particular, that a suitable decoupling capacitor is used at pin VDD.
Table 12: Port B Description
PORT B
I / O
Alternate Function
Input1
1. Reset state.
Output
Signal
Condition
PB0
with Weak Pull-up
when Digital Input
Push-pull
Analog Input
(ADC):AIN0
ADON = 1 & CH[1:0] = 00 (ADCCSR)
PB1
with Weak Pull-up
when Digital Input
Push-pull
Analog Input
(ADC) AIN1
ADON = 1 & CH[1:0] = 01 (ADCCSR)
PB2
with Weak Pull-up
when Digital Input
Push-pull
Analog Input
(ADC) AIN2
ADON = 1 & CH[1:0] = 10 (ADCCSR)
PB3
with Weak Pull-up
when Digital Input
Push-pull
Analog Input
(ADC) AIN3/ IFR
ADON = 1 & CH[1:0] = 11 (ADCCSR) for analog
input. In this case, IFR is disabled.
Figure 19: Port B [2:0]
DA
T
A
B
U
S
DR SEL
DDR SEL
Analog
switch
Analog enable
(ADC)
Common
Analog
Rail
1
0
TTL Schmitt Trigger
DR
DDR
latch
VDD
Analog enable
(ADC)
PAD
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST7FLI15BF1U6 功能描述:8位微控制器 -MCU 8-Bit MCU w/ Single Volt Flash RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小: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
ST7FLI15BF1U6TR 功能描述:8位微控制器 -MCU 8 BITS MICROCONTR RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小: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
ST7FLI19BF1M3TR 功能描述:8位微控制器 -MCU 8 BITS MICROCONTR RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小: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
ST7FLI19BF1U6TR 功能描述:8位微控制器 -MCU 8-Bit MCU w/ Single Volt Flash RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小: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
ST7FLI19BY1M3TR 功能描述:8位微控制器 -MCU 8 BITS MICROCONTR RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小: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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