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2 access timing – Renesas Emulation Probe M306V8T-EPB User Manual

Page 65

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M306V8T-EPB User’s Manual

4. Hardware Specifications

REJ10J0777-0100 Rev.1.00 2005.08.01

Page 65 of 90

4.2 Access Timing

Because this product emulates some ports, access timings are different from those of the actual MCUs. Chapter 4.2.1 describes
the access timing using this product.
4.2.1 Operation Timing of Memory Expansion Mode and Microprocessor Mode (Vcc1=Vcc2=Vcc3=3.3V)
(1) Separate Bus Timing
Table 4.2 and Figure 4.1 show the bus timing in memory expansion mode and microprocessor mode.

Table 4.2 Memory expansion mode and microprocessor mode (3-wait, accessing external area)

Actual MCU

[ns]

This product

[ns]

Symbol Item

Min. Max. Min. Max.

td(BCLK-AD)

Address

output

delay

time

30 36

th(BCLK-AD)

Address output hold time (BCLK standard)

4

See left

th(RD-AD)

Address output hold time (RD standard)

0

-3

th(WR-AD)

Address output hold time (WR standard)

(*2)

(*3)

td(BCLK-CS)

Chip-select output delay time

30

See left

th(BCLK-CS) Chip-select

output

hold

time (BCLK standard)

4

See left

td(BCLK-ALE)

ALE signal output delay time

30

See left

th(BCLK-ALE)

ALE signal output hold time

-4

See left

td(BCLK-RD)

RD signal output delay time

30

33

th(BCLK-RD)

RD signal output hold time

0

See left

td(BCLK-WR)

WR

signal

output

delay

time

30 38

th(BCLK-WR)

WR signal output hold time

0

See left

td(BCLK-DB)

Data output delay time (BCLK standard)

40

43

th(BCLK-DB)

Data output hold time (BCLK standard)

4

See left

td(DB-WR)

Data output delay time (WR standard)

(*1)

See left

th(WR-DB)

Data output hold time (WR standard)

(*2)

(*3)


*1 Calculated by the following formula according to the frequency of BCLK.

(

)

40

)

(

10

5

.

0

9

×

BCLK

f

n

[ns] n: "3" for 3-wait


*2 Calculated by the following formula according to the frequency of BCLK.

)

(

10

5

.

0

9

BCLK

f

×

[ns]


*3 Calculated by the following formula according to the frequency of BCLK.

17

)

(

10

5

.

0

9

×

BCLK

f

[ns]