参数资料
| 型号： | XR88C681CP/40-F |
| 厂商： | Exar Corporation |
| 文件页数： | 69/101页 |
| 文件大小： | 0K |
| 描述： | IC UART CMOS DUAL 40PDIP |
| 标准包装： | 9 |
| 特点： | * |
| 通道数： | 2，DUART |
| FIFO's： | 1 字节，3 字节 |
| 电源电压： | 4.75 V ~ 5.25 V |
| 带并行端口： | 是 |
| 带CMOS： | 是 |
| 安装类型： | 通孔 |
| 封装/外壳： | 40-DIP（0.600"，15.24mm） |
| 供应商设备封装： | 40-PDIP |
| 包装： | 管件 |
| 其它名称： | 1016-1328-5 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页当前第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页
XR88C681
7
Rev. 2.11
44 PLCC
40 PDIP,
CDIP
28 PDIP
Symbol
Type
Description
38
34
25
RESET
I
Master Reset (Active High).
Asserting this input clears in-
ternal registers, SR, ISR, IMR, OPR, OPCR, and initializes
the IVR to 0F16. Asserting this input also stops the Counter/
Timer, puts OP0 - OP7 in the high state, and places both
serial channels in the inactive state with TXDA and TXDB
outputs marking (high).
39
35
26
-CS
I
Chip Select (Active Low).
The data bus is tri-stated when
-CS is “high.” Data transfers between the CPU and the
DUART via D0 - D7 are enabled when -CS is “low”.
40
36
27
IP2
(C/T_EX)
I
Input 2. (General Purpose Input).
This input pin can also
be programmed to function as the “Counter/Timer external
clock” input (C/T_EX).
41
37
IP6
(RXCB)
I
Input 6 (I-Mode).
General Purpose Input pin. This input pin
can also be programmed to function as the External Receiv-
er Clock for Channel B (RXCB).
41
37
-IACK
I
Interrupt Acknowledge Input (Z-Mode).
Active Low.
This input is the CPU’s response to the Interrupt Request
issued by the DUART device. When the CPU asserts this
input, it indicates that the DUART’s interrupt request is about
to be serviced, and that the very next cycle will be an Inter-
rupt Acknowledge Cycle. The DUART will respond to the
CPU’s Interrupt Acknowledge by placing the contents of the
Interrupt Vector Register (IVR) on the data bus (D0 - D7).
42
38
IP5
(TXCB)
I
Input 5 (I-Mode).
General Purpose Input pin. This pin can
also be configured to function as the external clock input for
the Transmitter of Channel B (TXCB).
42
38
IEO
(Z-Mode)
O
Interrupt Enable Output (Z-Mode).
Active High.
This output pin is normally “high”. However, either of the
following two conditions can cause this output pin to be ne-
gated (toggled “low”).
1. If the IEI (Interrupt Enable Input) pin is “low”. If IEO is
“low” because of the IEI pin, IEO will toggle “high” once
the IEI has toggled “high”.
2. The DUART has issued an Interrupt Request to the CPU
(-INTR pin is toggled “low”). If IEO is “low” because the
DUART has requested an Interrupt, then IEO will remain
“low”, throughout the Interrupt Service Routine, until the
CPU has invoked the “” command.
43
39
IP4
(RXCA)
I
Input 4 (I-Mode).
General Purpose Input pin. This input pin
can also be configured to function as the external clock input
for the Receiver of Channel A (RXCA).
43
39
IEI
(Z-Mode)
I
Interrupt Enable Input (Z-Mode).
Active High.
If this active-high input is at a logic “high”, the DUART is ca-
pable of generating all non-masked Interrupt Requests to the
CPU. If this input is at a logic “low”, the DUART is inhibited
from generating any Interrupt Requests to the CPU.
44
40
28
VCC
PWR
Most Positive Power Supply.
相关PDF资料 |
PDF描述 |
|---|---|
| AT89C51RB2-RLRIM | IC MCU FLASH 8051 16K 5V 44-VQFP |
| XR16V2550IM-F | IC UART FIFO 16B 48TQFP |
| MAX7311AWG+T | IC I/O EXPANDER I2C 16B 24SOIC |
| XR16L2750CM-F | IC UART FIFO 64B DUAL 48TQFP |
| XR20M1172IL32-F | IC UART FIFO I2C/SPI 64B 32QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| XR88C681J | 制造商:Exar Corporation 功能描述: |
| XR88C681J-F | 功能描述:UART 接口集成电路 0.5V-2V UART temp -45 to 85C RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| XR88C681JTR-F | 功能描述:UART 接口集成电路 Dual Channel UART RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| XR88C681MN-S0968 | 制造商:Exar Corporation 功能描述: |
| XR88C681N/40 | 制造商:EXAR 制造商全称:EXAR 功能描述:CMOS DUAL CHANNEL UART (DUART) |
发布紧急采购，3分钟左右您将得到回复。