
Rev. 2.50
236
��ne 22� 20��
Rev. 2.50
23�
��ne 22� 20��
HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
A/D Flash MCU with EEPROM
HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
A/D Flash MCU with EEPROM
UART Module D.C. Characteristics
Ta=25°C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
Conditions
I
DD�
Operating C�rrent *
(SPI Enabled� UART disabled)
3.0V f
CLKI
=�2MHz� SCK=f
CLKI
/4�
O�tp�t no load
—
—
�.0
mA
5.0V f
CLKI
=�6MHz� SCK=f
CLKI
/4�
O�tp�t no load
—
—
2.0
mA
I
DD2
Operating C�rrent *
(SPI enabled� UART enabled)
2.2V f
CLKI
=6MHz� SCK=f
CLKI
/4�
O�tp�t no load
—
—
4.2
mA
5.0V f
CLKI
=�2MHz� SCK=f
CLKI
/4�
O�tp�t no load
—
—
4.8
mA
I
STB
Standby C�rrent *
(SPI disabled� UART disabled)
5.0V
f
CLKI
=�6MHz� SCK=f
CLKI
/4�
SCS=V
DD
� UARTEN=0�
TXEN=�� RXEN=�� SDI=H�
RX=H� O�tp�t no load
—
—
0.6
μA
V
IL
Inp�t Low Voltage for RX Ports
—
—
0
—
0.3V
DD
V
V
IH
Inp�t High Voltage for RX Ports
—
—
0.�V
DD
—
V
DD
V
I
OL
TX Port Sink C�rrent
3.0V
V
O
=0.�V
DD
2.5
5.0
—
mA
5.0V
�0.0
25.0
—
mA
I
OH
RX Port So�rce C�rrent
3.0V
V
O
=0.9V
DD
-�.5
-3.0
—
mA
5.0V
-5.0
-8.0
—
mA
R
PH
P�ll-high Resistance for SCS only
3.0V
—
20
60
�00
kΩ
5.0V
�0
30
50
kΩ
Note: "*" The operating current I
DD1
listed here is the additional current consumed when the slave SPI interface
in the UART module is enabled and the UART interface is disabled. Similarly, the operating current
I
DD2
here is the additional current consumed when both the slave SPI interface and UART interface are
enabled. If the UART module is enabled, either I
DD1
or I
DD2
should be added to calculate the relevant
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.