AT89LP214-20XU Atmel, AT89LP214-20XU Datasheet - Page 15

• Manufacturer Part Number: AT89LP214-20XU
• Description: MCU 8051 2K FLASH 20MHZ 14-TSSOP
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP214-20XU

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 12
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 14-TSSOP
• Package: 14TSSOP
• Device Core: 8051
• Family Name: AT89
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 12
• Interface Type: SPI/UART
• Number Of Timers: 2
• Core: 8051
• Processor Series: AT89x
• Maximum Clock Frequency: 20 MHz
• Data Ram Size: 128 B
• Mounting Style: SMD/SMT
• Height: 1.05 mm
• Length: 5.1 mm
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.4 V
• Width: 4.5 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

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
15