at90pwm81-16se ATMEL Corporation, at90pwm81-16se Datasheet - Page 253

• Manufacturer Part Number: at90pwm81-16se
• Description: 8-bit Avr Microcontroller With 8k Bytes In- System Programmable Flash
• Manufacturer: ATMEL Corporation

7734M–AVR–03/10
Figure 22-1.
Table 22-7.
Table 22-8.
Signal Name in
Programming Mode
PAGEL/BS1
RDY/BSY
XA1/BS2
DATA
XA0
WR
OE
XA1/BS2
XA0
WR
Pin
OE
Parallel Programming
Pin Name Mapping
Pin Values Used to Enter Programming Mode
PAGEL/BS1
+ 12 V
XA1/BS2
RDY/BSY
Pin Name
PB[7:0]
AREF
XA0
PD2
PD1
PD5
PD6
WR
PE2
OE
Prog_enable[3]
Prog_enable[2]
Prog_enable[1]
Prog_enable[0]
AREF
PD2
PD1
PD5
RESET/PE0
XTAL1/PE1
GND
PD6
PE 2
Symbol
I/O
I/O
O
I
I
I
I
I
Function
0: Device is busy programming, 1: Device is ready
for new command
Output Enable (Active low)
Write Pulse (Active low)
XTAL Action Bit 0
XTAL Action Bit 1
Byte Select 2 (“0” selects Low byte, “1” selects
2’nd High byte)
Program memory and EEPROM Data Page Load
Byte Select 1 (“0” selects Low byte, “1” selects
High byte)
Bi-directional Data bus (Output when OE is low)
PB[7:0]
AVCC
VCC
+ 5V
+ 5V
DATA
AT90PWM81
Value
0
0
0
0
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