HD4048412FS datasheet(98/127 Pages) RENESAS

98 / 127 page

HD404849 Series

Bit

Initial value

Read/Write

Bit name

R/W

RAME

R/W

IAOF

R/W

ICSF

R/W

ICEF

A/D current off flag (IAOF: $021, bit 2)

Refer to description of operating modes

RAME

Refer to description of timers

ICEF

Refer to description of timers

ICSF

IAOF (A/D current off flag)

Current I

is cut off.

Current I

flows.

Figure 83 A/D Current Off Flag (IAOF)

Note on Use: Use the SEM and SEMD instructions to write data to the A/D start flag (ADSF: $020, bit 2),

but make sure that the A/D start flag is not written to during A/D conversion. Data read from the A/D data

The A/D converter does not operate in the stop, watch, and subactive modes because it relies on the clock

from OSC, which is stopped in these modes. During these low-power dissipation modes, current through

the resistor ladder is cut off to decrease the power input.

The port data register (PDR) is initialized to 1 by an MCU reset. At this time, if pull-up MOS is selected as

active by bit 3 of the miscellaneous register (MIS3), the port will be pulled up to V

CC. When using a shared

R port/analog input pin as an input pin, clear PDR to 0. Otherwise, if pull-up MOS is selected by MIS3 and

PDR is set to 1, a pin selected by bit 1 of the A/D mode register as an analog pin will remain pulled up.

HD4048412FS Datasheet(PDF) 98 Page - Renesas Technology Corp