Rainbow-electronics ATmega64M1 Manuel d'utilisateur télécharger pdf (Page 303)

100

101

303

8209A–AVR–08/09

ATmega16M1/32M1/64M1

1. A: Load Command “0000 1000”.

2. B: Load Address Low Byte, 0x00.

3. Set OE

to “0”, and BS1 to “1”. The Calibration byte can now be read at DATA.

4. Set OE

to “1”.

28.9.15 Parallel Programming Characteristics

Figure 28-7. Parallel Programming Timing, Including some General Timing Requirements

Figure 28-8. Parallel Programming Timing, Loading Sequence with Timing Requirements

(1)

Note: 1. The timing requirements shown in Figure 28-7 (i.e., t

DVXH

, t

XHXL

, and t

XLDX

) also apply to load-

ing 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)

1 2 ... 298 299 300 301 302 303 304 305 306 307 308 ... 342 343

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