- 您现在的位置：买卖IC网 > PDF目录68811 > 71M6542G-IGT/F (MAXIM INTEGRATED PRODUCTS INC) SPECIALTY ANALOG CIRCUIT, PQFP100 PDF资料下载
参数资料
| 型号： | 71M6542G-IGT/F |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP100 |
| 封装： | LEAD FREE, LQFP-100 |
| 文件页数： | 137/165页 |
| 文件大小： | 2208K |
| 代理商： | 71M6542G-IGT/F |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页当前第137页第138页第139页第140页第141页第142页第143页第144页第145页第146页第147页第148页第149页第150页第151页第152页第153页第154页第155页第156页第157页第158页第159页第160页第161页第162页第163页第164页第165页
v1.1
2008–2011 Teridian Semiconductor Corporation
73
Figure 25: 3-Wire Interface. Write Command when CNT=0
Figure 26: 3-wire Interface. Write Command when HiZ=1 and WFR=1.
2.5.10 SPI Slave Port
The slave SPI port communicates directly with the MPU data bus and is able to read and write Data RAM
and I/O RAM locations. It is also able to send commands to the MPU. The interface to the slave port
consists of the SPI_CSZ, SPI_CKI, SPI_DI and SPI_DO pins. These pins are multiplexed with the
combined DIO/LCD segment driver pins SEGDIO36 to SEGDIO39.
Additionally, the SPI interface allows flash memory to be read and to be programmed. To facilitate flash
programming, cycling power or asserting RESET causes the SPI port pins to default to SPI mode. The
SPI port is disabled by clearing the SPI_E bit (I/O RAM 0x270C[4]).
Possible applications for the SPI interface are:
1) An external host reads data from CE locations to obtain metering information. This can be used in
applications where the 71M654x function as a smart front-end with preprocessing capability. Since
the addresses are in 16-bit format, any type of XRAM data can be accessed: CE, MPU, I/O RAM, but
not SFRs or the 80515-internal register bank.
2) A communication link can be established via the SPI interface: By writing into MPU memory locations,
the external host can initiate and control processes in the 71M654x MPU. Writing to a CE or MPU
location normally generates an interrupt, a function that can be used to signal to the MPU that the
byte that had just been written by the external host must be read and processed. Data can also be
inserted by the external host without generating an interrupt.
3) An external DSP can access front-end data generated by the ADC. This mode of operation uses the
71M654x as an analog front-end (AFE).
4) Flash programming by the external host (SPI Flash Mode).
SPI Transactions
A typical SPI transaction is as follows. While SPI_CSZ is high, the port is held in an initialized/reset state.
During this state, SPI_DO is held in Hi-Z state and all transitions on SPI_CLK and SPI_DI are ignored.
When SPI_CSZ falls, the port begins the transaction on the first rising edge of SPI_CLK. As shown in
Table 62, a transaction consists of an optional 16 bit address, an 8 bit command, an 8 bit status byte,
followed by one or more bytes of data. The transaction ends when SPI_CSZ is raised. Some transactions
may consist of a command only.
CNT Cycles (0 shown)
Write -- No HiZ
D7
INT5 not issued
CNT Cycles (0 shown)
Write -- HiZ
INT5 not issued
EECTRL Byte Written
SCLK (output)
BUSY (bit)
SDATA (output)
SCLK (output)
BUSY (bit)
SDATA (output)
(HiZ)
SDATA output Z
(LoZ)
CNT Cycles (6 shown)
Write -- With HiZ and WFR
EECTRL Byte Written
SCLK (output)
BUSY
(bit)
SDATA (out/in)
D2
D3
D4
D5
D6
D7
BUSY
READY
(From EEPROM)
INT5
(From 654x)
SDATA output Z
(HiZ)
(LoZ)
相关PDF资料 |
PDF描述 |
|---|---|
| 71M6541G-IGT/F | SPECIALTY ANALOG CIRCUIT, PQFP64 |
| 71M6541F-IGT/F | SPECIALTY ANALOG CIRCUIT, PQFP64 |
| 71M6543F-IGT/F | SPECIALTY ANALOG CIRCUIT, PQFP100 |
| 71M6543H-IGTR/F | SPECIALTY ANALOG CIRCUIT, PQFP100 |
| 71M6543F-IGTR/F | SPECIALTY ANALOG CIRCUIT, PQFP100 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6542G-IGTR/F | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
| 71M6542GT-IGT/F | 制造商:Maxim Integrated Products 功能描述:1-PHASE, 128KB, PRES TEMP SENSOR - Bulk |
| 71M6542GT-IGTR/F | 制造商:Maxim Integrated Products 功能描述:1-PHASE, 128KB, PRES TEMP SENSOR - Tape and Reel |
| 71M6543F | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Selectable Gain of 1 or 8 for One Current Energy Meter ICs Metrology Compensation |
| 71M6543F-DB | 功能描述:开发板和工具包 - 8051 71M6543 Eval Kit RoHS:否 制造商:Silicon Labs 产品:Development Kits 工具用于评估:C8051F960, Si7005 核心: 接口类型:USB 工作电源电压: |
发布紧急采购，3分钟左右您将得到回复。