DSP56853 datasheet(33/60 Pages) FREESCALE

33 / 60 page

Reset, Stop, Wait, Mode Select, and Interrupt Timing

56853 Technical Data, Rev. 6

Freescale Semiconductor

4.7 Reset, Stop, Wait, Mode Select, and Interrupt Timing

RD Deasserted to Address Invalid

tRDA

- 0.44

0.00

RWSH

Address Valid to RD Deasserted

tARDD

-2.07

1.00

RWSS,RWS

Valid Input Data Hold after RD

Deasserted

tDRD

0.00

N/A1

—

RD Assertion Width

tRD

-1.34

1.00

RWS

Address Valid to Input Data Valid

tAD

-10.27

1.00

RWSS,RWS

-13.5

1.19

Address Valid to RD Asserted

tARDA

- 0.94

0.00

RWSS

RD Asserted to Input Data Valid

tRDD

-9.53

1.00

RWSS,RWS

-12.64

1.19

WR Deasserted to RD Asserted

tWRRD

-0.75

0.25

WWSH,RWSS

RD Deasserted to RD Asserted

tRDRD

-0.162

0.00

RWSS,RWSH

WR Deasserted to WR Asserted

tWRWR

WWS=0

-0.44

0.75

WWSS, WWSH

WWS>0

-0.11

1.00

RD Deasserted to WR Asserted

tRDWR

0.14

0.50

MDAR, BMDAR,

RWSH, WWSS

-0.57

0.69

1. N/A since device captures data before it deasserts RD

2. If RWSS = RWSH = 0, RD does not deassert during back-to-back reads and D=0.00 should be used.

Table 4-8 Reset, Stop, Wait, Mode Select, and Interrupt Timing1, 2

Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98V, VDDIO = VDDA = 3.0–3.6V, TA = –40° to +120°C, CL ≤ 50pF, fop = 120MHz

Characteristic

Symbol

Min

Max

Unit

See Figure

RESET Assertion to Address, Data and Control

Signals High Impedance

tRAZ

—

4-11

Minimum RESET Assertion Duration3

tRA

—

4-11

RESET Deassertion to First External Address Output

tRDA

—

120T

4-11

Edge-sensitive Interrupt Request Width

tIRW

1T + 3

—

4-12

Table 4-7 External Memory Interface Timing (Continued)

Operating Conditions: VSS = VSSIO = VSSA = 0 V, VDD = 1.62-1.98 V, VDDIO = VDDA = 3.0–3.6V, TA = –40× to +120×C, CL £ 50pF, P = 8.333ns

Characteristic

Symbol

Wait States

Configuration

Wait States

Controls

Unit

DSP56853 Datasheet(PDF) 33 Page - Freescale Semiconductor, Inc

DSP56853 Datasheet(HTML) 33 Page - Freescale Semiconductor, Inc

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