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32C85 Datasheet(PDF) 56 Page - Renesas Technology Corp

Part # 32C85
Description  SINGLE-CHIP 16/32-BIT CMOS MICROCOMPUTER
PDF  92 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

32C85 Datasheet(HTML) 56 Page - Renesas Technology Corp

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Page 56
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td(DB – WR) =
f(BCLK)
– 20
[ns]
th(WR – DB) =
f(BCLK) X 2
10
9
– 10
[ns]
th(WR – AD) =
f(BCLK) X 2
10
9
– 10
[ns]
th(WR – CS) =
f(BCLK) X 2
10
9
– 10
[ns]
tw(WR) =
f(BCLK) X 2
10 X n
9
– 15
[ns]
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 cycles.
(if external bus cycle is a
φ + bφ, n=(bx2)-1)
10 X m
9
(if external bus cycle is a
φ + bφ, m= b)
NOTES:
3. tc ns is added when recovery cycle is inserted.
See Figure 5.2
Switching Characteristics
(VCC1 = VCC2 = 4.2 to 5.5V, VSS = 0V at Topr = –20 to 85oC unless otherwise specified)
Table 5.22 Memory Expansion Mode and Microprocessor Mode
(when accessing external memory space)



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