Rainbow Electronics ATmega64M1 - Manual (Page 303)

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
t
XHXL
t
WLWH
t
DVXH
t
XLDX
t
PLWL
t
WLRH
WR
RDY/BSY
PAGEL t
PHPL
t
PLBX
t
BVPH
t
XLWL
t
WLBX
t
BVWL
WLRL
XTAL1
PAGEL
t
PLXH XLXH
t
t
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)