ATMEGA88A-MMH Atmel, ATMEGA88A-MMH Datasheet - Page 302

IC MCU AVR 8K FLASH 28QFN

ATMEGA88A-MMH

Manufacturer Part Number
ATMEGA88A-MMH
Description
IC MCU AVR 8K FLASH 28QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets

Specifications of ATMEGA88A-MMH

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
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K 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
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
27.6
27.6.1
8271C–AVR–08/10
Parallel Programming Parameters, Pin Mapping, and Commands
Signal Names
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
D a t a
ATmega48A/48PA/88A/88PA/168A/168PA/328/328P. Pulses are assumed to be at least 250 ns
unless otherwise noted.
In this section, some pins of the ATmega48A/48PA/88A/88PA/168A/168PA/328/328P are refer-
enced by signal names describing their functionality during parallel programming, see
1
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:
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
Device
ATmega168A
ATmega168PA
ATmega328
ATmega328P
and
Table
V
CC
m e m o r y ,
- 0.3V < AV
27-13. Pins not described in the following table are referenced by pin names.
EEPROM
512 bytes
512 bytes
1K bytes
1K bytes
CC
Size
M e m o r y
< V
Table
Table
RDY/BSY
CC
PAGEL
+12 V
BS1
XA0
XA1
BS2
WR
+ 0.3V, however, AV
OE
27-16.
27-15.
4 bytes
4 bytes
4 bytes
4 bytes
Page
Size
L o c k
PD1
PD2
PD3
PD4
PD5
PD6
RESET
XTAL1
GND
PD7
PC2
PC[1:0]:PB[5:0]
PCWORD
EEA[1:0]
EEA[1:0]
EEA[1:0]
EEA[1:0]
b i t s ,
CC
should always be within 4.5 - 5.5V
AVCC
VCC
a n d
+4.5 - 5.5V
+4.5 - 5.5V
Pages
No. of
128
128
256
256
DATA
F u s e
PCPAGE
EEA[8:2]
EEA[8:2]
EEA[9:2]
EEA[9:2]
b i t s
EEAMSB
Figure 27-
i n
8
8
9
9
302
t h e

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