ATMEGA162L-8MI Atmel, ATMEGA162L-8MI Datasheet - Page 242

• Manufacturer Part Number: ATMEGA162L-8MI
• Description: IC MCU AVR 16K 3V 8MHZ 44-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA162L-8MI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: EBI/EMI, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-VQFN Exposed Pad
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

Serial Downloading
SPI Serial Programming
Pin Mapping
242
ATmega162(V/U/L)
Table 108. Parallel Programming Characteristics, V
Notes:
Table 109. Pin Mapping SPI Serial Programming
Both the Flash and EEPROM memory arrays can be programmed using the serial SPI
bus while RESET is pulled to GND. The serial interface consists of pins SCK, MOSI
(input) and MISO (output). After RESET is set low, the Programming Enable instruction
needs to be executed first before program/erase operations can be executed. NOTE, in
Table 109 on page 242, the pin mapping for SPI programming is listed. Not all parts use
the SPI pins dedicated for the internal SPI interface.
Figure 105. SPI Serial Programming and Verify
Note:
When programming the EEPROM, an auto-erase cycle is built into the self-timed pro-
gramming operation (in the Serial mode ONLY) and there is no need to first execute the
Chip Erase instruction. The Chip Erase operation turns the content of every memory
location in both the Program and EEPROM arrays into 0xFF.
Symbol
t
t
t
BVDV
OLDV
OHDZ
Symbol
1.
2. t
1. If the device is clocked by the Internal Oscillator, it is no need to connect a clock
MOSI
MISO
SCK
Bits commands.
source to the XTAL1 pin.
t
WLRH_CE
WLRH
Parameter
BS1 Valid to DATA valid
OE Low to DATA Valid
OE High to DATA Tri-stated
is valid for the Write Flash, Write EEPROM, Write Fuse Bits and Write Lock
is valid for the Chip Erase command.
MOSI
MISO
SCK
Pins
PB5
PB6
PB7
XTAL1
RESET
GND
I/O
O
I
I
(1)
CC
VCC
= 5 V ± 10% (Continued)
Min
0
Serial Data out
Serial Data in
Description
Serial Clock
Typ
Max
250
250
250
2513C–AVR–09/02
Units
ns
ns
ns