AT89LP216-20PI ATMEL [ATMEL Corporation], AT89LP216-20PI Datasheet - Page 13
AT89LP216-20PI
Manufacturer Part Number
AT89LP216-20PI
Description
Microcontroller with 2K Bytes Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT89LP216-20PI.pdf
(90 pages)
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3621A–MICRO–6/06
Figure 10-1. Power-on Reset Sequence (BOD Disabled)
If the Brown-out Detector (BOD) is also enabled, the start-up timer does not begin counting until
after V
event occurs prior to the end of the initialization sequence, the timer must first wait for that
sequence to complete before counting.
Figure 10-2. Power-on Reset Sequence (BOD Enabled)
Note:
The start-up timer delay is user-configurable with the Start-up Time User Fuses and depends on
the clock source
time for V
the start-up time after a Brown-out Reset or when waking up from Power-down during internally
timed mode.
Time-out
Time-out
Internal
Internal
Internal
Internal
Reset
Reset
CC
Reset
Reset
RST
RST
t
V
POR
RST
RST
V
reaches the BOD threshold voltage V
CC
CC
CC
is approximately 92 µs ± 5%.
and the selected clock source. The Start-Up Time fuses also control the length of
t
POR
V
(Table
POR
10-1). The start-up delay should be selected to provide enough settling
(RST Controlled Externally)
(RST Controlled Externally)
V
V
BOD
POR
t
POR
+ t
SUT
t
SUT
(RST Tied to V
AT89LP216 [Preliminary]
BOD
(RST Tied to V
t
as shown in
RHD
CC
V
CC
)
V
RH
Figure
RH
)
V
POR
t
RHD
10-2. However, if this
13
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