Rainbow-electronics ATmega3290P_V Manuel d'utilisateur télécharger pdf (Page 294)

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101

294

ATmega329/3290/649/6490

2552H–AVR–11/06

Parallel Programming

Characteristics

Figure 126. Parallel Programming Timing, Including some General Timing

Requirements

Figure 127. Parallel Programming Timing, Loading Sequence with Timing

Requirements

(1)

Note: 1. The timing requirements shown in Figure 126 (i.e., t

DVXH

, t

XHXL

, and t

XLDX

) also apply

to loading operation.

Data & Contol

(DATA, XA0/1, BS1, BS2)

XTAL1

XHXL

WLWH

DVXH

XLDX

PLWL

WLRH

RDY/BSY

PAGEL

PHPL

PLBX

BVPH

XLWL

WLBX

BVWL

WLRL

XTAL1

PAGEL

PLXH

XLXH

XLPH

ADDR0 (Low Byte) DATA (Low Byte) DATA (High Byte) ADDR1 (Low Byte)

DATA

BS1

XA0

XA1

LOAD ADDRESS

(LOW BYTE)

LOAD DATA

(LOW BYTE)

LOAD DATA

(HIGH BYTE)

LOAD DATA

LOAD ADDRESS

(LOW BYTE)

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