ATmega1284P Atmel Corporation, ATmega1284P Datasheet - Page 301

• Manufacturer Part Number: ATmega1284P
• Manufacturer: Atmel Corporation

Specifications of ATmega1284P

• Flash (kbytes): 128 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 32
• Usb Speed: No
• Usb Interface: No
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 16
• Eeprom (bytes): 4096
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Table 27-8.
27.6
27.6.1
8272C–AVR–06/11
ATmega164A/ATmega164PA
ATmega324A/ATmega324PA
ATmega644A/ATmega644PA
ATmega1284/ATmega1284P
Parallel Programming Parameters, Pin Mapping, and Commands
Signal Names
Device
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
D a t a m e m o r y , M e m o r y L o c k b i t s , a n d F u s e b i t s i n
the ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P. Pulses are assumed to be at
least 250 ns unless otherwise noted.
In this section, some pins of the ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P
are referenced by signal names describing their functionality during parallel programming, see
Figure 27-1 on page 301
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
Figure 27-1. Parallel Programming
Note:
1. Unused Pins should be left floating.
EEPROM Size
512bytes
1KBytes
2KBytes
4KBytes
ATmega164A/PA/324A/PA/644A/PA/1284/P
Table 27-13 on page
RDY/BSY
and
Table 27-12 on page
PAGEL
+12 V
BS2
BS1
XA0
XA1
WR
OE
Page Size
Figure 27-9 on page
4 bytes
4 bytes
8 bytes
8 bytes
(1)
PD1
PD2
PD3
PD4
PD5
PD6
PD7
RESET
XTAL1
GND
PA0
PCWORD
EEA[1:0]
EEA[1:0]
EEA[2:0]
EEA[2:0]
303.
302.
302. Pins not described in the following table
PB7 - PB0
AVCC
VCC
No. of Pages
128
256
256
512
+5V
+5V
DATA
EEA[10:2]
EEA[11:3]
PCPAGE
EEA[8:2]
EEA[9:2]
EEAMSB
10
11
8
9
301