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UPSD3422EB40U6 bảng dữ liệu(PDF) 276 Page - STMicroelectronics

tên linh kiện UPSD3422EB40U6
Giải thích chi tiết về linh kiện  Turbo Plus series Fast Turbo 8032 MCU with USB and programmable logic
PDF  300 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UPSD3422EB40U6 bảng dữ liệu(HTML) 276 Page - STMicroelectronics

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DC and AC parameters
UPSD3422, UPSD3433, UPSD3434, UPSD3454
276/300
Figure 99.
External WRITE cycle (80-pin device only)
Table 216.
External WRITE cycle AC characteristics (3 V or 5 V device)
Symbol
Parameter
40 MHz oscillator(1)
1.
BUSCON register is configured for 4 PFQCLK.
Variable oscillator
1/tCLCL = 3 to 40 MHz
Unit
Min
Max
Min
Max
tLHLL
ALE pulse width
17
tCLCL – 8
ns
tAVLL
Address setup to ALE
13
tCLCL – 12
ns
tLLAX
Address hold after ALE
7.5
0.5tCLCL – 5
ns
tWLWH
WR pulse width(2)
2.
Refer to Table 217 on page 277, for “n” and “m” values.
40
xtCLCL – 10
ns
tLLWL
ALE to WR
7.5
0.5tCLCL – 5
ns
tAVWL
Address (A0-A7) valid to WR(3)
3.
Latched address out on Ports A and B to WR is 2 ns, minimum.
32.5
1.5tCLCL – 5
ns
tWHLH
WR High to ALE High
9.5
9.5
0.5tCLCL – 3 0.5tCLCL + 2
ns
tQVWH
Data setup before WR(y)
20
ytCLCL – 5
ns
tWHQX
Data hold after WR
9.5
14.5
0.5tCLCL – 3 0.5tCLCL + 2
ns
tAVQV
Address valid to Latched
Address out on Ports A and B
35.5 (3 V)
1.5tCLCL – 2
ns
28 (5 V)
tCLCL – 9.5
ns
LATCHED
MCU
A8 - A15
MCU
AD0 - AD7
ALE
WR
RD
A8-A15
A8-A15
tLLWL
tWLWH
tAVLL
tLHLL
tQVWH
DATA OUT
A0-A7
DATA IN
A0-A7
tLLAX
tAVWL
tAVQV
tWHQX
tWHLH
AI10472
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