參數資料
型號： PIC16C73A-10/SP
廠商： Microchip Technology
文件頁數： 114/114頁
文件大?。?/td> 0K
描述： IC MCU OTP 4KX14 A/D PWM 28DIP
產品培訓模塊： Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標準包裝： 15
系列： PIC® 16C
核心處理器： PIC
芯體尺寸： 8-位
速度： 10MHz
連通性： I²C，SPI，UART/USART
外圍設備： 欠壓檢測/復位，POR，PWM，WDT
輸入/輸出數： 22
程序存儲器容量： 7KB（4K x 14）
程序存儲器類型： OTP
RAM 容量： 192 x 8
電壓 - 電源 (Vcc/Vdd)： 4 V ~ 6 V
數據轉換器： A/D 5x8b
振蕩器型： 外部
工作溫度： 0°C ~ 70°C
封裝/外殼： 28-DIP（0.300"，7.62mm）
包裝： 管件
其它名稱： PIC16C73A-10/SPR
PIC16C73A-10/SPR-ND
1997 Microchip Technology Inc.
DS30390E-page 99
PIC16C7X
12.0
UNIVERSAL SYNCHRONOUS
ASYNCHRONOUS RECEIVER
TRANSMITTER (USART)
The Universal Synchronous Asynchronous Receiver
Transmitter (USART) module is one of the two serial
I/O modules. (USART is also known as a Serial Com-
munications Interface or SCI). The USART can be con-
gured as a full duplex asynchronous system that can
communicate with peripheral devices such as CRT ter-
minals and personal computers, or it can be congured
Applicable Devices
72 73 73A 74 74A 76 77
as a half duplex synchronous system that can commu-
nicate with peripheral devices such as A/D or D/A inte-
grated circuits, Serial EEPROMs etc.
The USART can be congured in the following modes:
Asynchronous (full duplex)
Synchronous - Master (half duplex)
Synchronous - Slave (half duplex)
Bit SPEN (RCSTA<7>), and bits TRISC<7:6>, have to
be set in order to congure pins RC6/TX/CK and RC7/
RX/DT as the Universal Synchronous Asynchronous
Receiver Transmitter.
FIGURE 12-1: TXSTA: TRANSMIT STATUS AND CONTROL REGISTER (ADDRESS 98h)
R/W-0
U-0
R/W-0
R-1
R/W-0
CSRC
TX9
TXEN
SYNC
—
BRGH
TRMT
TX9D
R = Readable bit
W = Writable bit
U = Unimplemented bit,
read as ‘0’
- n =Value at POR reset
bit7
bit0
bit 7:
CSRC: Clock Source Select bit
Asynchronous mode
Don’t care
Synchronous mode
1 = Master mode (Clock generated internally from BRG)
0 = Slave mode (Clock from external source)
bit 6:
TX9: 9-bit Transmit Enable bit
1 = Selects 9-bit transmission
0 = Selects 8-bit transmission
bit 5:
TXEN: Transmit Enable bit
1 = Transmit enabled
0 = Transmit disabled
Note: SREN/CREN overrides TXEN in SYNC mode.
bit 4:
SYNC: USART Mode Select bit
1 = Synchronous mode
0 = Asynchronous mode
bit 3:
Unimplemented: Read as '0'
bit 2:
BRGH: High Baud Rate Select bit
Asynchronous mode
1 = High speed
Note:
For the PIC16C73/73A/74/74A, the asynchronous high speed mode (BRGH = 1) may expe-
rience a high rate of receive errors. It is recommended that BRGH = 0. If you desire a higher
baud rate than BRGH = 0 can support, refer to the device errata for additional information,
or use the PIC16C76/77.
0 = Low speed
Synchronous mode
Unused in this mode
bit 1:
TRMT: Transmit Shift Register Status bit
1 = TSR empty
0 = TSR full
bit 0:
TX9D: 9th bit of transmit data. Can be parity bit.
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