xr68c681 Exar Corporation, xr68c681 Datasheet - Page 38
xr68c681
Manufacturer Part Number
xr68c681
Description
Cmos Dual Channel Uart Duart
Manufacturer
Exar Corporation
Datasheet
1.XR68C681.pdf
(75 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
xr68c681CJ
Manufacturer:
EXAR
Quantity:
5 510
Company:
Part Number:
xr68c681CJ
Manufacturer:
ALTERA
Quantity:
5 510
Part Number:
xr68c681CJ
Manufacturer:
XR
Quantity:
20 000
Company:
Part Number:
xr68c681CJ-F
Manufacturer:
EXAR
Quantity:
1 150
Company:
Part Number:
xr68c681CJ-F
Manufacturer:
Exar Corporation
Quantity:
10 000
Part Number:
xr68c681CJ-F
Manufacturer:
EXAR/艾科嘉
Quantity:
20 000
Company:
Part Number:
xr68c681CJTR-F
Manufacturer:
RENESAS
Quantity:
1 001
Company:
Part Number:
xr68c681CJTR-F
Manufacturer:
Exar Corporation
Quantity:
10 000
Part Number:
xr68c681CP
Manufacturer:
XR
Quantity:
20 000
Company:
Part Number:
xr68c681CP-F
Manufacturer:
TOSHIBA
Quantity:
3 000
Bits 7 - 4: “Change in Logic State” Identification Bits
Bits 3 - 0: “The Current State of Input Pins IP0 - IP3”
Note:
user. Setting or clearing the bits in ACR[3:0] allows the user to specify exactly which Input Port pins to be enabled (or disabled) for
generating the “Input Port Change of State” interrupt. Setting or clearing IMR[7] allows the user to “globally” enable or disable this
interrupt.
XR68C681
This “two-tiered” interrupt enabling/disabling approach, for the “Input Change of State” interrupt allows tremendous flexibility for the
BRG Set
Select
Bit 7
Bit 6
Counter/Timer Mode and Source
Bit 5
Table 7
Table 14. ACR- Auxiliary Control Register
Bit 4
Delta IP3
Interrupt
Bit3
Delta IP2
Interrupt
Bit 2
Delta IP1
Interrupt
Bit 1
Delta IP0
Interrupt
Bit 0