Datasheet

366
ATmega16U4/32U4 [DATASHEET]
Atmel-7766J-USB-ATmega16U4/32U4-Datasheet_04/2016
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 loading operation.
Figure 28-9. Parallel Programming Timing, Reading Sequence (within the Same Page) 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 reading operation.
Table 28-13. Parallel Programming Characteristics, VCC = 5V ± 10%
Symbol Parameter Min. Typ. Max. Units
V
PP
Programming Enable Voltage 11.5 12.5 V
I
PP
Programming Enable Current 250 A
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