20.5.1 SFIOR – Special Function IO Register
When using the I/O specific commands IN and OUT, the I/O addresses 0x00 - 0x3F must be used. When addressing I/O Registers as data space using LD and ST instructions, 0x20 must be added to these offset addresses.
| Name: | SFIOR |
| Offset: | 0x30 |
| Reset: | 0 |
| Property: | When addressing I/O Registers as data space the offset address is 0x50 |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| PSR10 | |||||||||
| Access | R/W | ||||||||
| Reset | 0 |
Bit 0 – PSR10 Prescaler Reset Timer/Counter1 and Timer/Counter0
When this bit is written to one, the Timer/Counter1 and Timer/Counter0 prescaler will be reset. The bit will be cleared by hardware after the operation is performed. Writing a zero to this bit will have no effect. Note that Timer/Counter1 and Timer/Counter0 share the same prescaler and a reset of this prescaler will affect both timers. This bit will always be read as zero.