- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄3771 > MCP23S18T-E/MJ (Microchip Technology)IC I/O EXPANDER SPI 16B 24QFN PDF資料下載
參數(shù)資料
| 型號(hào)： | MCP23S18T-E/MJ |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 16/56頁 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER SPI 16B 24QFN |
| 標(biāo)準(zhǔn)包裝： | 3,300 |
| 接口： | SPI |
| 輸入/輸出數(shù)： | 16 |
| 中斷輸出： | 是 |
| 頻率 - 時(shí)鐘： | 10MHz |
| 電源電壓： | 1.8 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-VFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 24-QFN（4x4） |
| 包裝： | 帶卷 (TR) |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁當(dāng)前第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁
2008 Microchip Technology Inc.
DS22103A-page 23
MCP23018/MCP23S18
1.6.6
CONFIGURATION REGISTER
The
IOCON
register
contains
several
bits
for
configuring the device:
The BANK bit changes how the registers are mapped
If BANK = 1, the registers associated with each
port are segregated. Registers associated with
PORTA are are mapped from address 00h - 0Ah
and registers associated with PORTB are
mapped from Address 10h - 1Ah
If BANK = 0, the A/B registers are paired. For
example, IODIRA is mapped to address 00h and
IODIRB is mapped to the next address (address
01h). The mapping for all registers is from 00h -
15h
It is important to take care when changing the BANK bit
as the address mapping changes after the byte is
clocked into the device. The address pointer may point
to an invalid location after the bit is modified.
For example, if the device is configured to automati-
cally increment its internal address pointer the following
scenario would occur:
BANK = 0
Write 80h to 0Ah (IOCON) to set the BANK bit
After the write completes the internal address now
points to 0Bh which is an invalid address when
the BANK bit is set
For this reason, it is advised to only perform byte writes
to this register when changing the BANK bit.
The MIRROR bit controls how the INTA and INTB pins
function with respect to each other.
When MIRROR = 1, the INTn pins are functionally
OR’ed so that an interrupt on either port will cause
both pins to activate
When MIRROR = 0, the INT pins are separated.
Interrupt conditions on a port will cause its respec-
tive INT pin to activate
The Sequential Operation (SEQOP) controls the
incrementing function of the address pointer. If the
address pointer is disabled, the address pointer does
not automatically increment after each byte is clocked
during a serial transfer. This feature is useful when it is
desired to continuously poll (read) or modify (write) a
register.
The Open-Drain (ODR) control bit enables/disables the
INT pin for open-drain configuration.
The Interrupt Polarity (INTPOL) sets the polarity of the
INT pin. This bit is functional only when the ODR bit is
cleared, configuring the INT pin as active push-pull.
The Interrupt Clearing Control (INTCC) configures how
interrupts are cleared. When set (INTCC = 1), the
interrupt is cleared when the INTCAP register is read.
When cleared (INTCC = 0), the interrupt is cleared
when the GPIO register is read.
The interrupt can only be cleared when the interrupt
condition is inactive. Refer to Section 1.7.5 “Clearing
Interrupts” for details.
Note:
The INTB pin is not bonded out on the
MCP23S18 (SPI) device in the 24-lead
QFN package. The MIRROR bit must be
configured to a “1” in order for interrupts to
be detected on PORTB.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ATTINY261-15XZ | MCU AVR 2K FLASH 15MHZ 20-TSSOP |
| MCP23016T-I/SO | IC I/O EXPANDER I2C 16B 28SOIC |
| 1888021-8 | CONN MINISAS RCPT SHIELD 36POS |
| ATTINY261-15MZ | MCU AVR 2K FLASH 15MHZ 32-QFN |
| 1888021-4 | CONN MINISAS RCPT SHIELD 36POS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP23X08/17 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Unique Features of the MCP23X08/17 GPIO Expanders |
| MCP23X08EV | 功能描述:界面開發(fā)工具 MCP23X08 8b GPIO Exp Eval Brd RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| MCP23X17EV | 功能描述:其他開發(fā)工具 MCP23X17 EVAL BRD RoHS:否 制造商:Parallax 產(chǎn)品:ELEV-8 Hex Upgrade Kits 類型:Robotics 工具用于評(píng)估:ELEV-8 Quadcopter 工作電源電壓: |
| MCP-24 | 制造商:Taiyo Electric Ind. 功能描述: |
| MCP-240-00002-00 | 制造商:SUPER MICRO COMPUTER, INC. 功能描述:SPARE PARTS - Trays |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。