ATMEGA325-16AJ ATMEL [ATMEL Corporation], ATMEGA325-16AJ Datasheet - Page 268

• Manufacturer Part Number: ATMEGA325-16AJ
• Description: 8-bit Microcontroller with In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Parallel Programming
Characteristics
268
ATmega325/3250/645/6450
Figure 117. Parallel Programming Timing, Including some General Timing
Requirements
Figure 118. Parallel Programming Timing, Loading Sequence with Timing
Requirements
Note:
PAGEL
XTAL1
(DATA, XA0/1, BS1, BS2)
DATA
BS1
XA0
XA1
1. The timing requirements shown in Figure 117 (i.e., t
Data & Contol
to loading operation.
RDY/BSY
(1)
ADDR0 (Low Byte)
LOAD ADDRESS
PAGEL
XTAL1
(LOW BYTE)
WR
t
t
BVPH
DVXH
(LOW BYTE)
LOAD DATA
DATA (Low Byte)
t
t
XHXL
PHPL
t
t
t
t
t
XLXH
XLDX
PLBX
XLWL
PLWL
t
BVWL
(HIGH BYTE)
LOAD DATA
DATA (High Byte)
t
WLWH
t
DVXH
XLPH
WLRL
LOAD DATA
, t
XHXL
t
PLXH
t
, and t
WLBX
LOAD ADDRESS
XLDX
(LOW BYTE)
2570A–AVR–09/04
ADDR1 (Low Byte)
) also apply
t
WLRH