21.5.18 Compare n Buffer Register

This register serves as the buffer for the associated compare registers (TCAn.CMPn). Accessing any of these registers using the CPU or UPDI will affect the corresponding CMPnBV status bit.

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

These bits hold the MSB of the 16-bit compare buffer register.

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

These bits hold the LSB of the 16-bit compare buffer register.