參數(shù)資料
型號(hào): SCC68692E1F40
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: Dual asynchronous receiver/transmitter DUART
中文描述: 2 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, CDIP40
文件頁數(shù): 22/30頁
文件大小: 193K
代理商: SCC68692E1F40
Philips Semiconductors
Product specification
SCC68692
Dual asynchronous receiver/transmitter (DUART)
1998 Sep 04
22
t
PS
t
PH
t
PD
CSN
IP0–IP5
CSN
OP0–OP7
OLD DATA
NEW DATA
SD00150
Figure 7. Port Timing
NOTES:
1. INTRN or OP3 – OP7 when used as interrupt outputs.
2. The test for open-drain outputs is intended to guarantee switching of the output transistor. Measurement of this response is referenced from themidpoint of the switching signal, V
, to a
point 0.5V above V
. This point represents noise margin that assures true switching has occurred. Beyond this level, the effects of external circuitry and test environment are pronounced
and can greatly affect the resultant measurement.
V
M
V
OL
+0.5V
V
OL
RDN
OR
WRN
INTERRUPT
1
OUTPUT
t
IR
SD00090
Figure 8. Interrupt Timing
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