參數(shù)資料
型號: MCP23S08-E/P
廠商: Microchip Technology
文件頁數(shù): 44/44頁
文件大?。?/td> 0K
描述: IC I/O EXPANDER SPI 8B 18DIP
產(chǎn)品培訓(xùn)模塊: GPIO Expanders
標(biāo)準(zhǔn)包裝: 25
接口: SPI
輸入/輸出數(shù): 8
中斷輸出:
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: 通孔
封裝/外殼: 18-DIP(0.300",7.62mm)
供應(yīng)商設(shè)備封裝: 18-PDIP
包裝: 管件
包括: POR
產(chǎn)品目錄頁面: 684 (CN2011-ZH PDF)
配用: GPIODM-KPLCD-ND - BOARD DEMO LCD GPIO EXP KEYPAD
2007 Microchip Technology Inc.
DS21919E-page 9
MCP23008/MCP23S08
1.5
GPIO Port
The GPIO module contains the data port (GPIO),
internal pull up resistors and the Output Latches
(OLAT).
Reading the GPIO register reads the value on the port.
Reading the OLAT register only reads the OLAT, not
the actual value on the port.
Writing to the GPIO register actually causes a write to
the OLAT. Writing to the OLAT register forces the
associated output drivers to drive to the level in OLAT.
Pins configured as inputs turn off the associated output
driver and put it in high-impedance.
1.6
Configuration and Control
Registers
The Configuration and Control blocks contain the
registers as shown in Table 1-3.
TABLE 1-3:
CONFIGURATION AND CONTROL REGISTERS
Register
Name
Address
(hex)
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
POR/RST
value
IODIR
00
IO7
IO6
IO5
IO4
IO3
IO2
IO1
IO0
1111 1111
IPOL
01
IP7
IP6
IP5
IP4
IP3
IP2
IP1
IP0
0000 0000
GPINTEN
02
GPINT7
GPINT6
GPINT5
GPINT4
GPINT3
GPINT2
GPINT1
GPINT0
0000 0000
DEFVAL
03
DEF7
DEF6
DEF5
DEF4
DEF3
DEF2
DEF1
DEF0
0000 0000
INTCON
04
IOC7
IOC6
IOC5
IOC4
IOC3
IOC2
IOC1
IOC0
0000 0000
IOCON
05
SREAD
DISSLW
HAEN*
ODR
INTPOL
--00 000-
GPPU
06
PU7
PU6
PU5
PU4
PU3
PU2
PU1
PU0
0000 0000
INTF
07
INT7
INT6
INT5
INT4
INT3
INT2
INT1
INTO
0000 0000
INTCAP
08
ICP7
ICP6
ICP5
ICP4
ICP3
ICP2
ICP1
ICP0
0000 0000
GPIO
09
GP7GP6
GP5GP4
GP3GP2
GP1GP0
0000 0000
OLAT
0A
OL7
OL6
OL5
OL4
OL3
OL2
OL1
OL0
0000 0000
* Not used on the MCP23008.
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