PD17012_15 Datasheet, PDF (270/320 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 (2/2)
Pin Function
LCD segment
PLL frequency
synthesizer
Crystal oscillator
Pin Symbol
LCD19/P2H0
LCD18/P2G0
LCD17/P2F0
LCD16/P2E0
LCD15/KS15/PYA15
|
LCD0/KS0/PYA0
VCOL
VCOH
EO
XIN
XOUT
Status of Each Pin and Notes on Processing
Halt
Clock Stop
Same as above general-purpose output
ports applies if these pins are used in
general-purpose output port mode.
All pins are set in LCD segment signal
output mode and output low level
(display off).
If they output key source signals,
current consumption increases via port
0D (with pull-down resistor) if there is
switch that is always ON such as
transistor switch and if “1” is output as
key source data.
Current consumption increases during
PLL operation.
These pins are as follows when PLL
is disabled.
VCOL and VCOH: Internally pulled
down
EO:
Floated
PLL is automatically disabled when
CE pin goes low.
PLL is disabled.
These pins are as follows.
VCOL and VCOH: Internally pulled
down
EO:
Floated
Current consumption changes due to
oscillation waveform of crystal
oscillator.
Current consumption decreases as
oscillation amplitude increases.
Because oscillation amplitude is
influenced by crystal resonator and
load capacitor used, evaluation must
be performed.
XIN pin is internally pulled down, and
XOUT pin outputs high level.
268
Data Sheet U10101EJ4V0DS