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参数资料
| 型号： | SCC68681E1A44,518 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 23/29页 |
| 文件大小： | 0K |
| 描述： | IC DUART 44PLCC |
| 标准包装： | 500 |
| 特点： | 故障启动位检测 |
| 通道数： | 2，DUART |
| FIFO's： | 3 位 |
| 电源电压： | 5V |
| 带自动流量控制功能： | 是 |
| 带故障启动位检测功能： | 是 |
| 带CMOS： | 是 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-LCC（J 形引线） |
| 供应商设备封装： | 44-PLCC |
| 包装： | 带卷 (TR) |
| 其它名称： | 935274496518 SCC68681E1A44-T SCC68681E1A44-T-ND |
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Philips Semiconductors
Product data
SCC68681
Dual asynchronous receiver/transmitter (DUART)
2004 Apr 06
3
PIN CONFIGURATIONS
1
39
17
28
40
29
18
7
PLCC
6
PIN/FUNCTION
1
NC
16 OP5
31 OP2
2
A1
17 OP7
32 OP0
3
IP3
18 D1
33 TxDA
4A2
19 D3
34 NC
5
IP1
20 D5
35 RxDA
6
A3
21 D7
36 X1/CLK
7
A4
22 GND
37 X2
8
IP0
23 NC
38 RESETN
9
R/WN
24 INTRN
39 CSN
10 DTACKN
25 D6
40 IP2
11
RxDB
26 D4
41 IACKN
12 NC
27 D2
42 IP5
13 TxDB
28 D0
43 IP4
14 OP1
29 OP6
44 VCC
15 OP3
30 OP4
24
23
22
21
20
19
18
17
16
15
28
27
12
10
11
9
8
7
6
5
4
3
2
1
14
13
26
25
29
30
31
32
33
34
35
36
37
38
39
40
DIP
VCC
IP4
IP5
IACKN
IP2
CSN
RESETN
X2
X1/CLK
RxDA
TxDA
OP0
OP2
OP4
OP6
D0
D2
D4
D6
INTRN
A1
IP3
A2
IP1
A3
A4
IP0
R/WN
DTACKN
RxDB
TxDB
OP1
OP3
OP5
OP7
D1
D3
D5
D7
GND
SD00107
Figure 1. Pin Configurations
PIN DESCRIPTION
SYMBOL
PIN
TYPE
NAME AND FUNCTION
PLCC44
DIP40
D0–D7
28, 18,
27, 19,
26, 20,
25, 21
25, 16,
24, 17,
23, 18,
22, 19
I/O
Data Bus: Bidirectional 3-State data bus used to transfer commands, data and status between
the DUART and the CPU. D0 is the least significant bit.
CSN
39
35
I
Chip Select: Active-LOW input signal. When LOW, data transfers between the CPU and the
DUART are enabled on D0–D7 as controlled by the R/WN, RDN and A1–A4 inputs. When HIGH,
places the D0–D7 lines in the 3-State condition.
R/WN
9
8
I
Read/Write: A HIGH input indicates a read cycle and a LOW input indicates a write cycle, when a
cycle is initiated by assertion of the CSN input.
A1–A4
2, 4, 6, 7
1, 3, 5, 6
I
Address Inputs: Select the DUART internal registers and ports for read/write operations.
RESETN
38
34
I
Reset: A LOW level clears internal registers (SRA, SRB, IMR, ISR, OPR, OPCR), initializes the
IVR to hex 0F, puts OP0–OP7 in the HIGH state, stops the counter/timer, and puts Channel A and
B in the inactive state, with the TxDA and TxDB outputs in the mark (HIGH) state. Clears Test
modes, sets MR pointer to MR1.
DTACKN
10
9
O
Data Transfer Acknowledge: Three-state active LOW output asserted in write, read, or interrupt
cycles to indicate proper transfer of data between the CPU and the DUART.
INTRN
24
21
O
Interrupt Request: Active-LOW, open-drain, output which signals the CPU that one or more of
the eight maskable interrupting conditions are true.
IACKN
41
37
I
Interrupt Acknowledge: Active-LOW input indicating an interrupt acknowledge cycle. In
response, the DUART will place the interrupt vector on the data bus and will assert DTACKN if it
has an interrupt pending.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SCC68681E1A44-S | 功能描述:UART 接口集成电路 RPLCMNT FOR SCN68681 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 |
| SCC68681E1A44-T | 功能描述:UART 接口集成电路 RPLCMNT FOR SCN68681 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 |
| SCC68681E1N40 | 功能描述:UART 接口集成电路 RPLCMNT FOR SCN68681 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 |
| SCC68681E1N40,112 | 功能描述:UART 接口集成电路 RPLCMNT FOR SCN68681 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 |
| SCC68681E1N40112 | 制造商:NXP Semiconductors 功能描述:IC DUAL UART FIFO 115KBAUD 5.5V DIP40 |
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