DSP56156 View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

DSP56156

16-bit Digital Signal Processor

Motorola => Freescale 

Freescale Semiconductor, Inc.

AC Electrical Characteristics and Timing

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

Capacitance Derating

CLKO

(output)

DR

(input)

DSO

(output)

T0, T2 T1, T3

33

30

31

Figure 16 Recovery from Wait/Stop State Using DR Pin — Asynchronous Timing

Capacitance Derating

The DSP56156 External Bus Timing Specifications are designed and tested at the maximum ca-

pacitive load of 50 pF, including stray capacitance. Typically, the drive capability of the Exter-

nal Bus pins (A0-A15, D0-D15, PS/DS, RD, BS, WR, R/W) derates linearly at 1 ns per 12 pF of

additional capacitance from 50 pF to 250 pF of loading. Port B and C pins derate linearly at 1 ns

per 5 pF of additional capacitance from 50 pF to 250 pF of loading.

When an internal memory access follows an external memory access, the PS/DS, R/W, RD

and WR strobes remain deasserted and A0-A15 do not change from their previous state.

28

DSP56156 Data Sheet

MOTOROLA

For More Information On This Product,

Go to: www.freescale.com

Share Link: