AT90PWM2B-16SE ATMEL [ATMEL Corporation], AT90PWM2B-16SE Datasheet - Page 283

• Manufacturer Part Number: AT90PWM2B-16SE
• Description: 8-bit Microcontroller with 8K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

4317J–AVR–08/10
Figure 25-1. Parallel Programming
Table 25-7.
Table 25-8.
Signal Name in
Programming Mode
RDY/BSY
OE
WR
BS1
XA0
XA1
PAGEL
BS2
DATA
PAGEL
XA1
XA0
BS1
Pin
Pin Name Mapping
Pin Values Used to Enter Programming Mode
RDY/BSY
+ 12 V
PAGEL
Pin Name
XA1
BS2
PB[7:0]
BS1
WR
XA0
OE
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PE2
Prog_enable[3]
Prog_enable[2]
Prog_enable[1]
Prog_enable[0]
PD1
PD2
PD3
PD4
PD5
RESET
XTAL1
GND
PD6
PD7
PE2
Symbol
I/O
I/O
O
I
I
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)
Byte Select 1 (“0” selects Low byte, “1” selects
High byte)
XTAL Action Bit 0
XTAL Action Bit 1
Program memory and EEPROM Data Page
Load
Byte Select 2 (“0” selects Low byte, “1” selects
2’nd High byte)
Bi-directional Data bus (Output when OE is
low)
PB[7:0]
AVCC
VCC
AT90PWM2/3/2B/3B
+ 5V
+ 5V
DATA
Value
0
0
0
0
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