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參數(shù)資料
| 型號(hào)： | 71M6543G-IGT/F |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 模擬信號(hào)調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP100 |
| 封裝： | LEAD FREE, LQFP-100 |
| 文件頁(yè)數(shù)： | 89/157頁(yè) |
| 文件大小： | 2178K |
| 代理商： | 71M6543G-IGT/F |
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71M6543F/H and 71M6543G/GH Data Sheet
v1.2
2008–2011 Teridian Semiconductor Corporation
37
Table 18: UART Modes
UART 0
UART 1
Mode 0
N/A
Start bit, 8 data bits, parity, stop bit, variable
baud rate (internal baud rate generator)
Mode 1
Start bit, 8 data bits, stop bit, variable
baud rate (internal baud rate generator
or timer 1)
Start bit, 8 data bits, stop bit, variable baud
rate (internal baud rate generator)
Mode 2
Start bit, 8 data bits, parity, stop bit,
fixed baud rate 1/32 or 1/64 of fCKMPU
N/A
Mode 3
Start bit, 8 data bits, parity, stop bit,
variable baud rate (internal baud rate
generator or timer 1)
N/A
Parity of serial data is available through the P flag of the accumulator. 7-bit serial modes with
parity, such as those used by the FLAG protocol, can be simulated by setting and reading bit 7 of
8-bit output data. 7-bit serial modes without parity can be simulated by setting bit 7 to a constant 1.
8-bit serial modes with parity can be simulated by setting and reading the 9
th bit, using the control
bits TB80 (S0CON[3]) and TB81 (S1CON[3]) in the S0CON (SFR 0x98) and S1CON (SFR 0x9B) registers
for transmit and RB81 (S1CON[2]) for receive operations.
All supported operation modes use oversampling for the incoming bit stream when receiving data. Each
bit is sampled three times at the projected middle of the bit duration. This technique allows for deviations
of the received baud rate from nominal of up to 3.5%.
The feature of receiving 9 bits (Mode 3 for UART0, Mode A for UART1) can be used as handshake signals
for inter-processor communication in multi-processor systems. In this case, the slave processors have bit
SM20 (S0CON[5]) for UART0, or SM21 (S1CON[5] for UART1, set to 1. When the master processor outputs
the slave’s address, it sets the 9
th bit to 1, causing a serial port receive interrupt in all the slaves. The slave
processors compare the received byte with their address. If there is a match, the addressed slave clears
SM20 or SM21 and receive the rest of the message. The rest of the slaves ignore the message. After
addressing the slave, the host outputs the rest of the message with the 9
th bit set to 0, so no additional
serial port receive interrupts is generated.
UART Control Registers:
The functions of UART0 and UART1 depend on the setting of the Serial Port Control Registers S0CON
Since the TI0, RI0, TI1 and RI1 bits are in an SFR bit addressable byte, common practice
would be to clear them with a bit operation, but this must be avoided. The hardware implements
bit operations as a byte wide read-modify-write hardware macro. If an interrupt occurs after
the read, but before the write, its flag is cleared unintentionally.
The proper way to clear these flag bits is to write a byte mask consisting of all ones except
for a zero in the location of the bit to be cleared. The flag bits are configured in hardware to
ignore ones written to them.
Table 19: The S0CON (UART0) Register (SFR 0x98)
Bit
Symbol
Function
S0CON[7]
SM0
The SM0 and SM1 bits set the UART0 mode:
Mode
Description
SM0
SM1
0
N/A
0
1
8-bit UART
0
1
2
9-bit UART
1
0
3
9-bit UART
1
S0CON[6]
SM1
S0CON[5]
SM20
Enables the inter-processor communication feature.
S0CON[4]
REN0
If set, enables serial reception. Cleared by software to disable reception.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 71M6543G-IGTR/F | 功能描述:計(jì)量片上系統(tǒng) - SoC Precision Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 處理器系列:71M6511 類(lèi)型:Metering SoC 最大時(shí)鐘頻率:70 Hz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:7 KB 接口類(lèi)型:UART 可編程輸入/輸出端數(shù)量:12 片上 ADC: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel |
| 71M6543GT-IGT/F | 制造商:Maxim Integrated Products 功能描述:3-PHASE, 128KK, PRES TEMP SENSOR - Bulk |
| 71M6543GT-IGTR/F | 制造商:Maxim Integrated Products 功能描述:3-PHASE, 128KK, PRES TEMP SENSOR - Tape and Reel |
| 71M6543H | 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:Selectable Gain of 1 or 8 for One Current Energy Meter ICs Metrology Compensation |
| 71M6543H-IGT/F | 功能描述:IC ENERGY METER 100-LQFP 制造商:maxim integrated 系列:Single Converter Technology? 包裝:托盤(pán) 零件狀態(tài):停產(chǎn) 輸入阻抗:- 測(cè)量誤差:0.1% 電壓 - I/O 高:2V 電壓 - I/O 低:0.8V 電流 - 電源:- 電壓 - 電源:3 V ~ 3.6 V 表計(jì)類(lèi)型:3 相 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:100-LQFP 供應(yīng)商器件封裝:100-LQFP（14x14） 標(biāo)準(zhǔn)包裝:90 |
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