參數(shù)資料
型號(hào): C8051F019R
廠商: Silicon Laboratories Inc
文件頁數(shù): 147/154頁
文件大小: 0K
描述: IC 8051 MCU 16K FLASH 48TQFP
標(biāo)準(zhǔn)包裝: 1
系列: C8051F018
核心處理器: 8051
芯體尺寸: 8-位
速度: 25MHz
連通性: SMBus(2 線/I²C),SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,溫度傳感器,WDT
輸入/輸出數(shù): 16
程序存儲(chǔ)器容量: 16KB(16K x 8)
程序存儲(chǔ)器類型: 閃存
RAM 容量: 1.25K x 8
電壓 - 電源 (Vcc/Vdd): 2.8 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 48-TQFP
包裝: 剪切帶 (CT)
其它名稱: 336-1049-1
C8051F018
C8051F019
13.3.
General Purpose Port I/O
Each MCU has four byte-wide, bi-directional parallel ports that can be used general purpose I/O. Each port is
accessed through a corresponding special function register (SFR) that is both byte addressable and bit addressable.
When writing to a port, the value written to the SFR is latched to maintain the output data value at each pin. When
reading, the logic levels of the port’s input pins are returned regardless of the XBRn settings (i.e. even when the pin
is assigned to another signal by the Crossbar, the Port Register can always still read its corresponding Port I/O pin).
The exception to this is the execution of the read-modify-write instructions. The read-modify-write instructions
when operating on a port SFR are the following: ANL, ORL, XRL, JBC, CPL, INC, DEC, DJNZ and MOV, CLR
or SET, when the destination is an individual bit in a port SFR. For these instructions, the value of the port register
(not the pin) is read, modified, and written back to the SFR.
13.4.
Configuring Ports Which are not Pinned Out
P2 and P3 are not pinned out on the C8051F019. These port registers are still available for software use in the
C8051F019. Whether used or not in software, it is recommended not to let these port drivers go to high impedance
state. This is prevented after reset by having the weak pull-ups enabled as described in the XBR2 register. It is
recommended that each output driver for ports not pinned out should be configured as push-pull using the
corresponding PRTnCF register. This will inhibit a high impedance state even if the weak pull-up is disabled.
Figure 13.6. P0: Port0 Register
R/W
Reset Value
P0.7
P0.6
P0.5
P0.4
P0.3
P0.2
P0.1
P0.0
11111111
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
SFR Address:
(bit addressable)
0x80
Bits7-0: P0.[7:0]
(Write – Output appears on I/O pins per XBR0, XBR1, and XBR2 Registers)
0: Logic Low Output.
1: Logic High Output (high-impedance if corresponding PRT0CF.n bit = 0)
(Read – Regardless of XBR0, XBR1, and XBR2 Register settings).
0: P0.n pin is logic low.
1: P0.n pin is logic high.
Figure 13.7. PRT0CF: Port0 Configuration Register
R/W
Reset Value
00000000
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
SFR Address:
0xA4
Bits7-0: PRT0CF.[7:0]: Output Configuration Bits for P0.7-P0.0 (respectively)
0: Corresponding P0.n Output mode is Open-Drain.
1: Corresponding P0.n Output mode is Push-Pull.
(Note:
When SDA, SCL, and RX appear on any of the P0 I/O, each are open-drain
regardless of the value of PRT0CF).
Rev. 1.2
92
相關(guān)PDF資料
PDF描述
C8051F018R IC 8051 MCU 16K FLASH 64TQFP
C8051F206R IC 8051 MCU 8K FLASH 48TQFP
1996771-1 CONN PIN CONTACT GOLD
C8051F023R IC 8051 MCU 64K FLASH 64TQFP
533082-1 CONN PIN GUIDE .375 UNPLATED
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
C8051F020 功能描述:8位微控制器 -MCU 16KB 12ADC 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(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
C8051F020DK 功能描述:開發(fā)板和工具包 - 8051 Dev Kit - C8051F020 21 22 23 MCUs RoHS:否 制造商:Silicon Labs 產(chǎn)品:Development Kits 工具用于評(píng)估:C8051F960, Si7005 核心: 接口類型:USB 工作電源電壓:
C8051F020DK-A 功能描述:DEV KIT FOR F020/F021/F022/F023 RoHS:否 類別:編程器,開發(fā)系統(tǒng) >> 過時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:MCU 適用于相關(guān)產(chǎn)品:Freescale MC68HC908LJ/LK(80-QFP ZIF 插口) 所含物品:面板、纜線、軟件、數(shù)據(jù)表和用戶手冊 其它名稱:520-1035
C8051F020DK-B 功能描述:DEV KIT FOR F020/F021/F022/F023 RoHS:否 類別:編程器,開發(fā)系統(tǒng) >> 過時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:MCU 適用于相關(guān)產(chǎn)品:Freescale MC68HC908LJ/LK(80-QFP ZIF 插口) 所含物品:面板、纜線、軟件、數(shù)據(jù)表和用戶手冊 其它名稱:520-1035
C8051F020DK-E 功能描述:DEV KIT FOR F020/F021/F022/F023 RoHS:否 類別:編程器,開發(fā)系統(tǒng) >> 過時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:MCU 適用于相關(guān)產(chǎn)品:Freescale MC68HC908LJ/LK(80-QFP ZIF 插口) 所含物品:面板、纜線、軟件、數(shù)據(jù)表和用戶手冊 其它名稱:520-1035