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32C80 Scheda tecnica(PDF) 39 Page - Renesas Technology Corp

Il numero della parte 32C80
Spiegazioni elettronici  SINGLE-CHIP 16/32-BIT CMOS MICROCOMPUTER
PDF  60 Pages
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Produttore elettronici  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

32C80 Scheda tecnica(HTML) 39 Page - Renesas Technology Corp

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Page 39
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td(DB – WR) =
10 X m
9
– 25
[ns] (if external bus cycle is a
φ + bφ, m= (bx2)-1)
th(RD – AD) =
f(BCLK) X 2
10
9
– 10
[ns]
th(WR – AD) =
f(BCLK) X 2
10
9
– 10
[ns]
th(RD – CS) =
f(BCLK) X 2
10
9
– 10
[ns]
th(WR – CS) =
f(BCLK) X 2
10
9
– 10
[ns]
th(WR – DB) =
f(BCLK) X 2
10
9
– 10
[ns]
td(AD – ALE) =
f(BCLK) X 2
9
– 20
[ns] (if external bus cycle is a
φ + bφ, n= a)
th(ALE – AD) =
f(BCLK) X 2
9
– 10
[ns] (if external bus cycle is a
φ + bφ, n= a)
f(BCLK) X 2
1. Values can be obtained from the following equations, according to BCLK frequency.
2. Values can be obtained from the following equations, according to BCLK frequency and external bus cycle.
3. Values can be obtained from the following equations, according to BCLK frequency and external bus cycle.
10 X m
10 X n
4. Values can be obtained from the following equations, according to BCLK frequency and external bus cycle.
10 X n
NOTES:
See Figure 5.1
Switching Characteristics
(VCC = 4.2 to 5.5V, VSS = 0V at Topr = –20 to 85oC unless otherwise specified)
Table 5.20 Memory Expansion Mode and Microprocessor Mode
(when accessing an external memory space with the multiplexed bus)



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