atmega32c1 ATMEL Corporation, atmega32c1 Datasheet - Page 294

• Manufacturer Part Number: atmega32c1
• Description: Atmega32m1 Automotive 8-bit Avr Microcontroller With 32k/64k Bytes In-system Programmable Flash
• Manufacturer: ATMEL Corporation

294
ATmega32/64/M1/C1
Figure 24-1. Parallel Programming
Table 24-8.
Table 24-9.
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
XA0
WR
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
+ 5V
+ 5V
DATA
Value
0
0
0
0
7647A–AVR–02/08