参数资料
型号: MCP23018-E/MJ
厂商: Microchip Technology
文件页数: 8/56页
文件大小: 0K
描述: IC I/O EXPANDER I2C 16B 24QFN
标准包装: 91
接口: I²C
输入/输出数: 16
中断输出:
频率 - 时钟: 3.4MHz
电源电压: 1.8 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 24-VFQFN 裸露焊盘
供应商设备封装: 24-QFN 裸露焊盘(4x4)
包装: 管件
产品目录页面: 684 (CN2011-ZH PDF)
MCP23018/MCP23S18
DS22103A-page 16
2008 Microchip Technology Inc.
1.6
Configuration and Control
Registers
There are twenty two (22) registers associated with the
MCP23X18 as shown in Table 1-4 and Table 1-5. The
two tables show the register mapping with the two
BANK bit values. Ten (10) registers are associated
with Port A and ten (10) are associated with Port B.
One register (IOCON) is shared between the two ports.
The Port A registers are identical to the Port B regis-
ters, therefore, they will be referred to without differen-
tiating between the port designation (i.e., they will not
have the “A” or “B” designator assigned) in the register
tables.
TABLE 1-4:
CONTROL REGISTER SUMMARY (IOCON.BANK = 1)
Register
Name
Address
(hex)
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
POR/RST
value
IODIRA
00
IO7
IO6
IO5
IO4
IO3
IO2
IO1
IO0
1111 1111
IPOLA
01
IP7
IP6
IP5
IP4
IP3
IP2
IP1
IP0
0000 0000
GPINTENA
02
GPINT7
GPINT6
GPINT5
GPINT4
GPINT3
GPINT2
GPINT1
GPINT0
0000 0000
DEFVALA
03
DEF7
DEF6
DEF5
DEF4
DEF3
DEF2
DEF1
DEF0
0000 0000
INTCONA
04
IOC7
IOC6
IOC5
IOC4
IOC3
IOC2
IOC1
IOC0
0000 0000
IOCON
05
BANK
MIRROR
SEQOP
—ODR
INTPOL
INTCC
0000 0000
GPPUA
06
PU7
PU6
PU5
PU4
PU3
PU2
PU1
PU0
0000 0000
INTFA
07
INT7INT6INT5INT4INT3
INT2INT1
INTO
0000 0000
INTCAPA
08
ICP7
ICP6
ICP5
ICP4
ICP3
ICP2
ICP1
ICP0
0000 0000
GPIOA
09
GP7
GP6
GP5
GP4
GP3
GP2
GP1
GP0
0000 0000
OLATA
0A
OL7
OL6
OL5
OL4
OL3
OL2
OL1
OL0
0000 0000
IODIRB
10
IO7
IO6
IO5
IO4
IO3
IO2
IO1
IO0
1111 1111
IPOLB
11
IP7
IP6
IP5
IP4
IP3
IP2
IP1
IP0
0000 0000
GPINTENB
12
GPINT7
GPINT6
GPINT5
GPINT4
GPINT3
GPINT2
GPINT1
GPINT0
0000 0000
DEFVALB
13
DEF7
DEF6
DEF5
DEF4
DEF3
DEF2
DEF1
DEF0
0000 0000
INTCONB
14
IOC7
IOC6
IOC5
IOC4
IOC3
IOC2
IOC1
IOC0
0000 0000
IOCON
15
BANK
MIRROR
SEQOP
ODR
INTPOL
INTCC
0000 0000
GPPUB
16
PU7
PU6
PU5
PU4
PU3
PU2
PU1
PU0
0000 0000
INTFB
17
INT7
INT6
INT5
INT4
INT3
INT2
INT1
INTO
0000 0000
INTCAPB
18
ICP7
ICP6
ICP5
ICP4
ICP3
ICP2
ICP1
ICP0
0000 0000
GPIOB
19
GP7
GP6
GP5
GP4
GP3
GP2
GP1
GP0
0000 0000
OLATB
1A
OL7
OL6
OL5
OL4
OL3
OL2
OL1
OL0
0000 0000
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