AT90PWM2B-16SE ATMEL [ATMEL Corporation], AT90PWM2B-16SE Datasheet - Page 147

• Manufacturer Part Number: AT90PWM2B-16SE
• Description: 8-bit Microcontroller with 8K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

16.8.4.3
4317J–AVR–08/10
Input Mode Operation
If PELEVnx bit set, the significant edge of PSCn 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, PSCn Input A is taken into account only during Dead-Time0 and On-
Time0 period (respectively Dead-Time1 and On-Time1 for PSCn Input B).
- In 1-ramp-mode PSC Input A or PSC Input B act on the whole ramp.
Thanks to 4 configuration bits (PRFM3:0), it’s possible to define the mode of the PSC input. All
Table 16-6.
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
PSC Input Mode Operation
PSCn Input has no action on PSC output
16.9See “PSC Input Mode 1: Stop signal, Jump to Opposite Dead-Time
and Wait” on page 148.
See “PSC Input Mode 2: Stop signal, Execute Opposite Dead-Time and
Wait” on page 149.
See “PSC Input Mode 3: Stop signal, Execute Opposite while Fault
active” on page 150.
See “PSC Input Mode 4: Deactivate outputs without changing timing.” on
page 150.
See “PSC Input Mode 5: Stop signal and Insert Dead-Time” on page 151.
See “PSC Input Mode 6: Stop signal, Jump to Opposite Dead-Time and
Wait.” on page 152.
See “PSC Input Mode 7: Halt PSC and Wait for Software Action” on page
152.
See “PSC Input Mode 8: Edge Retrigger PSC” on page 152.
See “PSC Input Mode 9: Fixed Frequency Edge Retrigger PSC” on page
153.
Reserved : Do not use
See “PSC Input Mode 14: Fixed Frequency Edge Retrigger PSC and
Disactivate Output” on page 154.
Reserved : Do not use
Description
AT90PWM2/3/2B/3B
147