23.5.18 Compare n Buffer Register

This register serves as the buffer for the associated Compare n (TCAn.CMPn) register. Writing to this register from the CPU or UPDI will set the Compare Buffer valid (CMPnBV) bit in the TCAn.CTRLF register.

The TCAn.CMPnBUFL and TCAn.CMPnBUFH register pair represents the 16-bit value, TCAn.CMPnBUF. The low byte [7:0] (suffix L) is accessible at the original offset. The high byte [15:8] (suffix H) can be accessed at offset + 0x01.

Name: CMPnBUF
Offset: 0x38 + n*0x02 [n=0..2]
Reset: 0x00
Property: -

Bit 15141312111098 
 CMPBUF[15:8] 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 
Bit 76543210 
 CMPBUF[7:0] 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 

Bits 15:8 – CMPBUF[15:8] Compare High Byte

This bit field holds the MSB of the 16-bit Compare Buffer register.

Bits 7:0 – CMPBUF[7:0] Compare Low Byte

This bit field holds the LSB of the 16-bit Compare Buffer register.