ATmega48PA Automotive Atmel Corporation, ATmega48PA Automotive Datasheet - Page 171
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ATmega48PA Automotive
Manufacturer Part Number
ATmega48PA Automotive
Description
Manufacturer
Atmel Corporation
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21.7
7701E–AVR–02/11
High-voltage Serial Programming
This section describes how to program and verify Flash Program memory, EEPROM Data
memory, Lock bits and Fuse bits in the Atmel
Figure 21-3. High-voltage Serial Programming
Table 21-12. Pin Name Mapping
The minimum period for the Serial Clock Input (SCI) during High-voltage Serial Programming
is 220ns.
Table 21-13. Pin Values Used to Enter Programming Mode
Signal Name in High-voltage
Serial Programming Mode
SDI
SII
SDO
SCI
Pin
PA0
PA1
PA2
SCI
+11.5 - 12.5V
Symbol
Prog_enable[0]
Prog_enable[1]
Prog_enable[2]
Atmel ATtiny24/44/84 [Preliminary]
PB3
PB0
GND
Pin Name
PA6
PA5
PA4
PB0
(RESET)
®
ATtiny24/44/84.
I/O
I
I
O
I
VCC
PA4
PA5
PA6
Function
Serial Data Input
Serial Instruction Input
Serial Data Output
Serial Clock Input (min. 220ns period)
+1.8 - 5.5V
SDO
SII
SDI
Value
0
0
0
171
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