Rainbow-electronics ATtiny2313 Manual de usuario descargar pdf (Pagina 171)

171

ATtiny2313

2543A–AVR–08/03

Reading the Calibration Byte The algorithm for reading the Calibration byte is as follows (refer to “Programming the

Flash” on page 166 for details on Command and Address loading):

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”.

Parallel Programming

Characteristics

Figure 74. Parallel Programming Timing, Including some General Timing

Requirements

Figure 75. Parallel Programming Timing, Loading Sequence with Timing

Requirements

(1)

Note: 1. The timing requirements shown in Figure 74 (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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