32C85 datasheet(71/92 Pages) RENESAS

71 / 92 page

Page 71

)

(

5. Electrical Characteristics (M32C/85)

BCLK

CSi

ADi

-3ns.min

BHE

ADi

/DBi

30ns.min

td(BCLK-RD)

tsu(DB-BCLK)

tdz(RD-AD)

8ns.max

ALE

td(BCLK-ALE)

18ns.max

td(AD-ALE)

th(ALE-AD)

th(BCLK-RD)

th(RD-AD)

td(BCLK-AD)

th(BCLK-CS)

th(RD-CS)

th(BCLK-ALE)

tcyc

Memory Expansion Mode and Microprocessor Mode

(when accessing external memory space and using the multiplexed bus)

0ns.min

BCLK

CSi

ADi

BHE

ADi

/DBi

WR,WRL,

WRH

ALE

th(BCLK-WR)

18ns.max

tac2(AD-DB)

[ Read Timing ] (2

φ +2φ Bus Cycles)

Address

(1)

td(AD-ALE)=(tcyc/2 x n-20)ns.min (if external bus cycle is a

φ + bφ, n=a)

th(ALE-AD)=(tcyc/2 x n-10)ns.min (if external bus cycle is a

φ + bφ, n=a)

th(RD-AD)=(tcyc/2-10)ns.min, th(RD-CS)=(tcyc/2-10)ns.min

tac2(RD-DB)=(tcyc/2 x m-35)ns.max (if external bus cycle is a

φ + bφ, m=(b x 2)-1)

tac2(AD-DB)=(tcyc/2 x p-35)ns.max (if external bus cycle is a

φ + bφ, p={(a+b-1) x 2}+1)

NOTES:

1. Varies with operation frequency:

(1)

[ Write Timing ] (2

φ +2φ Bus Cycles)

Address

td(AD-ALE)=(tcyc/2 x n - 20)ns.min

(if external bus cycle is a

φ + bφ, n=a)

th(ALE-AD)=(tcyc/2 x n -10)ns.min

(if external bus cycle is a

φ + bφ, n=a)

th(WR-AD)=(tcyc/2-10)ns.min,

th(WR-CS)=(tcyc/2-10)ns.min, th(WR-DB)=(tcyc/2-20)ns.min

td(DB-WR)=(tcyc/2 x m-25)ns.min

(if external bus cycle is a

φ + bφ, m=(b x 2)-1)

NOTES:

2. Varies with operation frequency:

Measurement Conditions:

• VCC1=VCC2=3.0 to 3.6V

• Input high and low voltage:

VIH=1.5V, VIL=0.5V

• Output high and low voltage:

VOH=1.5V, VOL=1.5V

Vcc1=Vcc2=3.3V

18ns.max

td(BCLK-WR)

th(WR-AD)

(2)

th(BCLK-AD)

0ns.min

Data output

th(ALE-AD)

-2ns.min

td(BCLK-ALE)

th(BCLK-ALE)

18ns.max

0ns.min

th(WR-CS)

td(AD-ALE)

td(BCLK-CS)

td(BCLK-AD)

th(BCLK-CS)

td(DB-WR)

th(WR-DB)

tcyc

(2)

18ns.max

0ns.min

tac2(RD-DB)

-2ns.min

td(BCLK-CS)

th(RD-DB)

th(BCLK-AD)

0ns.min

Data input

Address

tcyc=

f(BCLK)

Figure 5.8 VCC1=VCC2=3.3V Timing Diagram (2)

32C85 датащи(PDF) 71 Page - Renesas Technology Corp

32C85 датащи(HTML) 71 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92

датащи скачать

ссылки URL