参数资料
| 型号： | MCP23X08EV |
| 厂商： | Microchip Technology |
| 文件页数： | 6/10页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR MCP23X08 |
| 产品培训模块： | GPIO Expanders |
| 标准包装： | 1 |
| 主要目的： | 接口，GPIO 扩展器 |
| 已用 IC / 零件： | MCP23008，MCP23S08 |
| 已供物品： | 板，文档 |
AN1043
FIGURE 6:
8-BIT MODE: ADDRESS POINTER ENABLED (MCP23008 EXAMPLE)
When the address pointer is ENABLED and the device is in
8-bit mode, the address pointer will increment after every
byte is clocked. The address pointer will roll over to 00h
after exceeding 1Ah (which is the last location of Port B).
S 0 1 0 0 a a a 0 A 0 0 0 0 1 0 1 0 A 1 0 1 0 1 0 1 0 A 0 1 0 1 0 1 0 1 A 1 0 1 0 1 0 1 0 P
MCP23X08
Opcode
Register
Addr = 09h
Data @
09h
Data @
0Ah
Data @
10h
GPIOA
OLATA
IODIRB
IPOLB
09
0A
10
11
GPINTENB
DEFVALB
INTCONB
12
13
14
Note: The address pointer jumps
from 0Ah to 10h when transitioning
from Port A to Port B
IOCON
GPPUB
INTFB
INTCAPB
GPIOB
OLATB
FIGURE 7:
15
16
17
18
19
1A
16-BIT MODE: ADDRESS POINTER DISABLED (MCP23017 EXAMPLE)
When the address pointer is DISABLED and the device is in
16-bit mode, the address pointer will alternate between the
register pair. Also, the initial address can be either register
address (e.g., 14h or 15h) and the pointer will still alternate
between the registers.
S 0 1 0 0 a a a 0 A 0 0 0 1 0 0 1 0 A 1 0 1 0 1 0 1 0 A 0 1 0 1 0 1 0 1 A 1 0 1 0 1 0 1 0 P
MCP23X17
Opcode
Register
Addr = 12h
Data @
12h
Data @
13h
Data @
12h
INTCONB
IOCON
IOCON
GPPUA
GPPUB
INTFA
INTFB
INTCAPA
INTCAPB
GPIOA
GPIOB
OLATA
OLATB
DS01043A-page 6
09
0A
0B
0C
0D
0E
0F
10
11
12
13
14
15
? 2006 Microchip Technology Inc.
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