C8051F970-A-GM Datasheet, PDF (255/454 Pages) Silicon Laboratories – Low Power Capacitive Sensing MCU with up to 32 kB of Flash

C8051F97x
nop
mov A, RTC0DAT

Recommended Instruction Timing for a single register write with short strobe enabled:
mov RTC0ADR, #0h
mov RTC0DAT, #000h
nop
25.1.3. SmaRTClock Interface Autoread Feature
When Autoread is enabled, each read from RTC0DAT initiates the next indirect read operation on the SmaRTClock
internal register selected by RTC0ADR. Software should set the BUSY bit once at the beginning of each series of
consecutive reads. Software should follow recommended instruction timing or check if the SmaRTClock Interface
is busy prior to reading RTC0DAT. Autoread is enabled by setting AUTORD (RTC0ADR.6) to logic 1.
25.1.4. RTC0ADR Autoincrement Feature
For ease of reading and writing the 32-bit CAPTURE and ALARM values, RTC0ADR automatically increments
after each read or write to a CAPTUREn or ALARMn register. This speeds up the process of setting an alarm or
reading the current SmaRTClock timer value. Autoincrement is always enabled.
Recommended Instruction Timing for a multi-byte register read with short strobe and auto read enabled:
mov RTC0ADR, #0d0h
nop
nop
nop
mov A, RTC0DAT
nop
nop
mov A, RTC0DAT
nop
nop
mov A, RTC0DAT
nop
nop
mov A, RTC0DAT
Recommended Instruction Timing for a multi-byte register write with short strobe enabled:
mov RTC0ADR, #010h
mov RTC0DAT, #05h
nop
mov RTC0DAT, #06h
nop
mov RTC0DAT, #07h
nop
mov RTC0DAT, #08h
nop
256
Rev 1.0