參數(shù)資料
型號: C8051F300-GM
廠商: Silicon Laboratories Inc
文件頁數(shù): 6/178頁
文件大小: 0K
描述: IC 8051 MCU 8K FLASH 11QFN
產品培訓模塊: Serial Communication Overview
標準包裝: 122
系列: C8051F30x
核心處理器: 8051
芯體尺寸: 8-位
速度: 25MHz
連通性: SMBus(2 線/I²C),UART/USART
外圍設備: POR,PWM,溫度傳感器,WDT
輸入/輸出數(shù): 8
程序存儲器容量: 8KB(8K x 8)
程序存儲器類型: 閃存
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
數(shù)據(jù)轉換器: A/D 8x8b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 10-VFDFN 裸露焊盤
包裝: 管件
產品目錄頁面: 623 (CN2011-ZH PDF)
配用: 336-1444-ND - ADAPTER PROGRAM TOOLSTICK F300
336-1351-ND - KIT REF DES TEMP COMPENS RTC
336-1348-ND - KIT STARTER TOOLSTICK
336-1283-ND - KIT REF DESIGN DTMF DECODER
336-1278-ND - KIT TOOL EVAL SYS IN A USB STICK
336-1246-ND - DEV KIT F300/301/302/303/304/305
其它名稱: 336-1245
GND
/PORT-OUTENABLE
PORT-OUTPUT
PUSH-PULL
VDD
/WEAK-PULLUP
(WEAK)
PORT
PAD
ANALOG INPUT
Analog Select
PORT-INPUT
Rev. 2.9
103
C8051F300/1/2/3/4/5
12. Port Input/Output
Digital and analog resources are available through a byte-wide digital I/O Port, Port0. Each of the Port pins
can be defined as general-purpose I/O (GPIO), analog input, or assigned to one of the internal digital
resources as shown in Figure 12.3. The designer has complete control over which functions are assigned,
limited only by the number of physical I/O pins. This resource assignment flexibility is achieved through the
use of a Priority Crossbar Decoder. Note that the state of a Port I/O pin can always be read in the corre-
sponding Port latch, regardless of the Crossbar settings.
The Crossbar assigns the selected internal digital resources to the I/O pins based on the Priority Decoder
(Figure 12.3 and Figure 12.4). The registers XBR0, XBR1, and XBR2, defined in SFR Definition 12.1, SFR
Definition 12.2, and SFR Definition 12.3 are used to select internal digital functions.
All Port I/Os are 5 V tolerant (refer to Figure 12.2 for the Port cell circuit). The Port I/O cells are configured
as either push-pull or open-drain in the Port0 Output Mode register (P0MDOUT). Complete Electrical
Specifications for Port I/O are given in Table 12.1 on page 110.
XBR0, XBR1,
XBR2 Registers
Digital
Crossbar
Priority
Decoder
SYSCLK
2
(I
nt
ernal
Di
g
ital
S
ignals)
Highest
Priority
Lowest
Priority
P0
I/O
Cells
P0.0
P0.7
8
P0MDOUT,
P0MDIN Registers
SMBus
UART
T0, T1
2
4
PCA
P0
Port Latch
(P0.0-P0.7)
8
CP0
Outputs
2
Figure 12.1. Port I/O Functional Block Diagram
Figure 12.2. Port I/O Cell Block Diagram
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