at90pwm81-16se ATMEL Corporation, at90pwm81-16se Datasheet - Page 160

• Manufacturer Part Number: at90pwm81-16se
• Description: 8-bit Avr Microcontroller With 8k Bytes In- System Programmable Flash
• Manufacturer: ATMEL Corporation

14.8.4.3
160
AT90PWM81
Input Mode Operation
If PELEV0x bit set, the significant edge of PSCr Input A or B is rising (edge modes) or the active level is
high (level modes) and vice versa for unset/falling/low
- In 2- or 4-ramp mode, PSCr Input A is taken into account only during Dead-Time0 and On-Time0 period
(respectively Dead-Time1 and On-Time1 for PSCr Input B).
- In 1-ramp-mode PSCR Input A or PSCR Input B act on the whole ramp.
Thanks to 4 configuration bits (PRFM3:0), it’s possible to define the mode of the PSCR input. All
Table 14-5.
Notice: All following examples are given with rising edge or high level active inputs.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PRFM3:0
0000b
0001b
0010b
0011b
0100b
0101b
0110b
0111b
1000b
1001b
1010b
1011b
1100b
1101b
1110b
1111b
PSCR Input Mode Operation
Description
PSCr Input has no action on PSCR output
14.9See “PSCR Input Mode 1: Stop signal, Jump to Opposite Dead-Time and
Wait” on page 161.
See “PSCR Input Mode 2: Stop signal, Execute Opposite Dead-Time and Wait”
on page 162.
See “PSCR Input Mode 3: Stop signal, Execute Opposite while Fault active” on
page 163.
See “PSCR Input Mode 4: Deactivate outputs without changing timing.” on page
164.
See “PSCR Input Mode 5: Stop signal and Insert Dead-Time” on page 164.
See “PSCR Input Mode 6: Stop signal, Jump to Opposite Dead-Time and Wait.”
on page 165.
See “PSCR Input Mode 7: Halt PSCR and Wait for Software Action” on page
165.
See “PSCR Input Mode 8: Edge Retrigger PSC” on page 166.
See “PSCR Input Mode 9: Fixed Frequency Edge Retrigger PSC” on page 167.
Reserved : Do not use
See “PSCR Input Mode 14: Fixed Frequency Edge Retrigger PSCR and Deacti-
vate Output” on page 168.
Reserved : Do not use
7734M–AVR–03/10