Datasheet

111
ATtiny13
2535E–AVR–10/04
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 ATtiny13.
Figure 57. High-voltage Serial Programming
The minimum period for the Serial Clock Input (SCI) during High-voltage Serial Pro-
gramming is 220 ns.
Table 52. Pin Name Mapping
Signal Name in High-voltage
Serial Programming Mode Pin Name I/O Function
SDI PB0 I Serial Data Input
SII PB1 I Serial Instruction Input
SDO PB2 O Serial Data Output
SCI PB3 I Serial Clock Input (min. 220ns period)
Table 53. Pin Values Used to Enter Programming Mode
Pin Symbol Value
SDI Prog_enable[0] 0
SII Prog_enable[1] 0
SDO Prog_enable[2] 0
VCC
GND
SCK
MISO
MOSI
(RESET)
+1.8 - 5.5V
PB0
PB1
PB2
PB5
+11.5 - 12.5V
PB3 (CLKI)
SERIAL CLOCK INPUT