ATmega162 datasheet(243/324 Pages) ATMEL

243 / 324 page

243

2513K–AVR–07/09

ATmega162/V

Reading the

Calibration Byte

The algorithm for reading the calibration byte is as follows (refer to “Programming the Flash” on

page 237 for details on Command and Address loading):

A: Load Command “0000 1000”.

B: Load Address Low Byte, 0x00.

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

Set OE to “1”.

Parallel Programming

Characteristics

Figure 102. Parallel Programming Timing, Including some General Timing Requirements

Figure 103. Parallel Programming Timing, Loading Sequence with Timing Requirements

(1)

Note:

1. The timing requirements shown in Figure 102 (i.e., tDVXH, tXHXL, and tXLDX) 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)

ATmega162 Datasheet(PDF) 243 Page - ATMEL Corporation

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