ATMEGA48PA-AN Atmel, ATMEGA48PA-AN Datasheet - Page 299

• Manufacturer Part Number: ATMEGA48PA-AN
• Description: MCU AVR 4KB FLASH 20MHZ 32TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA48PA-AN

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

27.5
27.6
27.6.1
8161D–AVR–10/09
Page Size
Parallel Programming Parameters, Pin Mapping, and Commands
Signal Names
this byte is automatically written into the OSCCAL Register to ensure correct frequency of the
calibrated RC Oscillator.
Table 27-11. No. of Words in a Page and No. of Pages in the Flash
Table 27-12. No. of Words in a Page and No. of Pages in the EEPROM
This section describes how to parallel program and verify Flash Program memory, EEPROM
Data memory, Memory Lock bits, and Fuse bits in the ATmega48PA/88PA/168PA/328P. Pulses
are assumed to be at least 250 ns unless otherwise noted.
In this section, some pins of the ATmega48PA/88PA/168PA/328P are referenced by signal
names describing their functionality during parallel programming, see
13. Pins not described in the following table are referenced by pin names.
The XA1/XA0 pins determine the action executed when the XTAL1 pin is given a positive pulse.
The bit coding is shown in
When pulsing WR or OE, the command loaded determines the action executed. The different
Commands are shown in
Device
ATmega48PA
ATmega88PA
ATmega168PA
ATmega328P
Device
ATmega48PA
ATmega88PA
ATmega168PA
ATmega328P
(32K bytes)
Flash Size
16K words
(4K bytes)
(8K bytes)
(16K bytes)
2K words
4K words
8K words
EEPROM
256 bytes
512 bytes
512 bytes
1K bytes
Size
Table
Table
27-16.
27-15.
ATmega48PA/88PA/168PA/328P
Page Size
32 words
32 words
64 words
64 words
4 bytes
4 bytes
4 bytes
4 bytes
Page
Size
PCWORD
EEA[1:0]
EEA[1:0]
EEA[1:0]
EEA[1:0]
PCWORD
PC[4:0]
PC[4:0]
PC[5:0]
PC[5:0]
Pages
No. of
128
128
256
Pages
64
No. of
128
128
256
64
Figure 27-1
PCPAGE
EEA[7:2]
EEA[8:2]
EEA[8:2]
EEA[9:2]
PCPAGE
PC[10:5]
PC[11:5]
PC[12:6]
PC[13:6]
and
EEAMSB
PCMSB
Table 27-
10
11
12
13
7
8
8
9
299