ATTINY15 ATMEL [ATMEL Corporation], ATTINY15 Datasheet - Page 59

• Manufacturer Part Number: ATTINY15
• Manufacturer: ATMEL [ATMEL Corporation]

High-voltage Serial
Programming
Characteristics
Low-voltage Serial
Downloading
1187D–12/01
Figure 32. High-voltage Serial Programming Timing
Table 26. High-voltage Serial Programming Characteristics, T
V
Both the program and data memory arrays can be programmed using the SPI bus while
RESET is pulled to GND. The serial interface consists of pins SCK, MOSI (input) and
MISO (output). See Figure 33. After RESET is set low, the Programming Enable instruc-
tion needs to be executed first before program/erase instructions can be executed.
Figure 33. Serial Programming and Verify
Symbol
CC
SDI (PB0), SII (PB1)
t
t
t
t
t
SHOV
SHSL
SLSH
IVSH
SHIX
= 5.0V ± 10% (unless otherwise noted)
SDO (PB2)
Internal CK
SCI (PB3)
Parameter
SCI (PB3) Pulse Width High
SCI (PB3) Pulse Width Low
SDI (PB0), SII (PB1) Valid to SCI (PB3) High (8th
edge)
SDI (PB0), SII (PB1) Hold after SCI (PB3) High (8th
edge)
SCI (PB3) High (9th edge) to SDO (PB2) Valid
GND
1
PB5 (RESET)
GND
2
ATtiny15/L
t
IVSH
7
VALID
8
9
VCC
PB2
PB1
PB0
t
10
SHIX
t
SHOV
2.7 - 5.5V
t
SHSL
25.0
25.0
50.0
50.0
10.0
Min
15
SCK
MISO
MOSI
16.0
Typ
ATtiny15L
16
t
A
SLSH
= 25 ° C ± 10%,
Max
32.0
Units
ns
ns
ns
ns
ns
59