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32C80 Datasheet(PDF) 39 Page - Renesas Technology Corp

Part # 32C80
Description  SINGLE-CHIP 16/32-BIT CMOS MICROCOMPUTER
PDF  60 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

32C80 Datasheet(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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