參數(shù)資料
型號(hào): 935270074128
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 4 CHANNEL(S), 5M bps, SERIAL COMM CONTROLLER, PQFP64
封裝: 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-314-2, LQFP-64
文件頁(yè)數(shù): 31/56頁(yè)
文件大小: 715K
代理商: 935270074128
Philips Semiconductors
SC16C554/554D
Quad UART with 16-byte FIFO and infrared (IrDA) encoder/decoder
Product data
Rev. 02 — 13 March 2003
37 of 53
9397 750 11002
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
[1]
Applies to external clock, crystal oscillator max 24 MHz.
[2]
When in both DMA mode 0 and FIFO enable mode, the write cycle delay should be larger than one x1, clock cycle.
10.1 Timing diagrams
t32d
write cycle delay
25
-
25
-
20
-
ns
t33s
data set-up time
20
-
15
-
15
-
ns
t33h
data hold time
15
-
5
-
5
-
ns
tRESET
Reset pulse width
200
-
40
-
40
-
ns
N
baud rate divisor
1
216
11
216
11
216
1R
clk
Table 27:
AC electrical characteristics…continued
Tamb = 40 °C to +85 °C; VCC = 2.5 V, 3.3 V or 5.0 V ±10%, unless otherwise specied.
Symbol
Parameter
Conditions
2.5 V
3.3 V
5.0 V
Unit
Min
Max
Min
Max
Min
Max
Fig 9.
General read timing in 68 mode.
002aaa210
t30s
t31h
A0–A4
CS
R/W
D0–D7
t31d
t30w
t30h
t32s
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