Atmel ATmega48A User Manual

331
8271D–AVR–05/11
ATmega48A/PA/88A/PA/168A/PA/328/P
Figure 29-6. Parallel Programming Timing, Including some General Timing Requirements
Figure 29-7. Parallel Programming Timing, Loading Sequence with Timing Requirements
(1)
Note: 1. The timing requirements shown in Figure 29-6 (i.e., t
DVXH
, t
XHXL
, and t
XLDX
) also apply to load-
ing operation.
Figure 29-8. Parallel Programming Timing, Reading Sequence (within the Same Page) with
Timing Requirements
(1)
Note: 1. The timing requirements shown in Figure 29-6 (i.e., t
DVXH
, t
XHXL
, and t
XLDX
) also apply to read-
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)
XTAL1
OE
ADDR0 (Low Byte) DATA (Low Byte)
DATA (High Byte)
ADDR1 (Low Byte)
DATA
BS1
XA0
XA1
LOAD ADDRESS
(LOW BYTE)
READ DATA
(LOW BYTE)
READ DATA
(HIGH BYTE)
LOAD ADDRESS
(LOW BYTE)
t
BVDV
t
OLDV
t
XLOL
t
OHDZ

Atmel ATmega48A Specifications

General

Brand	Atmel
Model	ATmega48A
Category	Microcontrollers
Language	English