Holtek HT66F20 Manual page 237

HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
A/D Flash MCU with EEPROM
UART Module D.C. Characteristics
Symbol Parameter
Operating C�rrent *
I
DD�
(SPI Enabled� UART disabled)
Operating C�rrent *
I
DD2
(SPI enabled� UART enabled)
Standby C�rrent *
I
STB
(SPI disabled� UART disabled)
V Inp�t Low Voltage for RX Ports
IL
V Inp�t High Voltage for RX Ports
IH
I TX Port Sink C�rrent
OL
I RX Port So�rce C�rrent
OH
R P�ll-high Resistance for SCS only
PH
Note: "*" The operating current I
in the UART module is enabled and the UART interface is disabled. Similarly, the operating current
I here is the additional current consumed when both the slave SPI interface and UART interface are
DD2
enabled. If the UART module is enabled, either I
operating current of the device for different conditions. To calculate the standby current for the whole
device, the standby current shown above should be taken into account.
Rev. 2.50
Test Conditions
V Conditions
DD
f =�2MHz� SCK=f
CLKI
3.0V
O�tp�t no load
f =�6MHz� SCK=f
CLKI
5.0V
O�tp�t no load
f =6MHz� SCK=f
CLKI
2.2V
O�tp�t no load
f =�2MHz� SCK=f
CLKI
5.0V
O�tp�t no load
f =�6MHz� SCK=f
CLKI
SCS=V � UARTEN=0�
DD
5.0V
TXEN=�� RXEN=�� SDI=H�
RX=H� O�tp�t no load
— —
— —
3.0V
V =0.�V
O DD
5.0V
3.0V
V =0.9V
O DD
5.0V
3.0V
—
5.0V
listed here is the additional current consumed when the slave SPI interface
DD1
or I
DD1
23�
Min. Typ.
/4�
CLKI
— —
/4�
CLKI
— —
/4�
CLKI
— —
/4�
CLKI
— —
/4�
CLKI
— —
0 — 0.3V
0.�V —
DD
2.5 5.0
�0.0 25.0
-�.5 -3.0
-5.0 -8.0
20 60
�0 30
should be added to calculate the relevant
DD2
��ne 22� 20��
Ta=25°C
Max. Unit
�.0 mA
2.0 mA
4.2 mA
4.8 mA
0.6 μA
V
DD
V V
DD
— mA
— mA
— mA
— mA
�00 kΩ
50 kΩ