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32C80 Fiches technique(PDF) 38 Page - Renesas Technology Corp

No de pièce 32C80
Description  SINGLE-CHIP 16/32-BIT CMOS MICROCOMPUTER
PDF  60 Pages
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Fabricant  RENESAS [Renesas Technology Corp]
Site Internet  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

32C80 Fiches technique(HTML) 38 Page - Renesas Technology Corp

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Page 38
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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:
See Figure 5.1
Switching Characteristics
(VCC1 = VCC2 = 4.2 to 5.5V, VSS = 0V at Topr = –20 to 85oC unless otherwise specified)
Table 5.19 Memory Expansion Mode and Microprocessor Mode
(when accessing external memory space)



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