PD17012_15 Datasheet, PDF (269/320 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

µPD17012, 17P012
Table 21-2. Notes on Status of Each Pin in Halt and Clock Stop Statuses (1/2)
Pin Function
General-
purpose
I/O port
Port 0A
Port 0B
Port 1A
Port 1D
General-
purpose
input port
Port 0D
Port 1B
General- Port 0C
purpose
output port
Port 1C
Interrupt
Pin Symbol
P0A2/SCK1
P0A1/SO1
P0A0/SI1
P0B3/FCG1
P0B2/FCG0
P0B1/BEEP1
P0B0/BEEP0
P1A2
P1A1
P1A0
P1D3
P1D2
P1D1
P1D0
P0D3/K3
P0D2/K2
P0D1/K1
P0D0/K0
P1B3/FMIFC
P1B2/AMIFC
P1B1/ADC1
P1B0/ADC0
P0C3
P0C2
P0C1/PWM1
P0C0/PMW0
P1C3
P1C2
P1C1
P1C0
INT
Status of Each Pin and Notes on Processing
Halt
Clock Stop
Previous status before halt status is
set is retained as is.
(1) In output mode
Current consumption increases
if these pins are externally pulled
down while they output high level,
or externally pulled up while they
output low level.
Pay attention to N-ch open-drain
output pins (P0C3 to P0C0/
PWM0).
(2) In input mode
(except P0B3/FCG1, P0B2/FCG0,
P1B3/FMIFC, P1B2/AMIFC)
All these pins are set in general-purpose
input port mode.
All input ports, except port 1D (P1D3
to P1D0), are designed to prevent
increase in current consumption due
to noise even if they are externally
floated. Port 1D (P1D3 to P1D0) must
be externally pulled down or up so
that current consumption does not
increase due to noise.
Port 0D (P0D3/K3 to P0D0/K0) is
internally pulled down.
Current consumption increases
due to noise if these pins are
floated.
(3) Port 0D (P0D3/K3 to P0D0/K0)
Current consumption increases
if these pins are externally pulled
up because they have pull-down
resistors.
(4) P0B3/FCG1, P0B2/FCG0, P1B3/
FMIFC, P1B2/AMIFC
Current consumption increases
when P0B3/FCG1, P0B2/FCG0,
P1B3/FMIFC, P1B2/AMIFC pins
are used for IF counter because
internal amplifier operates.
These pins are set in general-purpose
output port mode.
Because IF counter is not
automatically disabled even if
CE pin goes low, it must be
initialized by program as
necessary.
P0B3/FCG1, P0B2/FCG0, P1B3/
FMIFC, P1B2/AMIFC are
designed to prevent increase in
current consumption due to noise
even if they are set in general
purpose input port mode and
floated.
Output contents are retained as is.
Therefore, current consumption
increases if these pins are externally
pulled down while they output high
level, or pulled up while they output
low level.
Current consumption increase due to external noise if this pin is floated.
Data Sheet U10101EJ4V0DS
267