AT89LP213 Atmel Corporation, AT89LP213 Datasheet - Page 15

• Manufacturer Part Number: AT89LP213
• Manufacturer: Atmel Corporation

Specifications of AT89LP213

• Flash (kbytes): 2 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 14
• Spi: 1
• Sram (kbytes): 0.125
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 2
• Isp: SPI/OCD
• Watchdog: Yes

3538E–MICRO–11/10
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.
INTERNAL
INTERNAL
TIME-OUT
INTERNAL
INTERNAL
TIME-OUT
RESET
RESET
RESET
RESET
CC
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
BOD
(RST Tied to V
t
as shown in
RHD
CC
V
CC
)
V
RH
AT89LP213/214
Figure
RH
)
V
POR
t
RHD
10-2. However, if this
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