Rainbow Electronics Atmega169L - Manual (Page 277)

277
ATmega169V/L
2514A–AVR–08/02
Parallel Programming
Characteristics F igu re 1 24. Paral lel Pro gram m in g Ti m ing , Inclu din g som e G ene ral T im in g
Requirements
F ig u re 12 5. Pa ral l el Prog ra m m in g T i m in g, L oa di ng Seq ue nce wi th T i m in g
Requirements
(1)
Note: 1. The timing requirements shown in Figure 124 (i.e., t
DVXH
, t
XHXL
, and t
XLDX
) also apply
to loading 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)