ATMEGA16_09 Datasheet, PDF (262/357 Pages) ATMEL Corporation – 8-bit Microcontroller with 16K Bytes In-System Programmable Flash

ATmega16(L)
Page Size
Table 107. No. of Words in a Page and no. of Pages in the Flash
Flash Size
Page Size PCWORD No. of Pages PCPAGE
8K words (16K bytes) 64 words PC[5:0]
128
PC[12:6]
PCMSB
12
Parallel
Programming
Parameters, Pin
Mapping, and
Commands
Signal Names
Table 108. No. of Words in a Page and no. of Pages in the EEPROM
EEPROM Size Page Size PCWORD No. of Pages PCPAGE
512 bytes
4 bytes
EEA[1:0]
128
EEA[8:2]
EEAMSB
8
This section describes how to parallel program and verify Flash Program memory, EEPROM
Data memory, Memory Lock bits, and Fuse bits in the ATmega16. Pulses are assumed to be at
least 250 ns unless otherwise noted.
In this section, some pins of the ATmega16 are referenced by signal names describing their
functionality during parallel programming, see Figure 127 and Table 109. 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 Table 111.
When pulsing WR or OE, the command loaded determines the action executed. The different
Commands are shown in Table 112.
Figure 127. Parallel Programming
RDY/BSY
OE
WR
BS1
XA0
XA1
PAGEL
+12 V
BS2
PD1
PD2
PD3
PD4
PD5
PD6
PD7
RESET
PA0
XTAL1
GND
+5V
VCC
+5V
AVCC
PB7 - PB0
DATA
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