Uart Mod - Holtek HT68F Series Manual

HT68F20/HT68F30/HT68F40/HT68F50/HT68F60
HT68FU30/HT68FU40/HT68FU50/HT68FU60
Enhanced I/O Flash Type 8-Bit MCU with EEPROM
UART Module D.C. Characteristics
Symbol
Operating C�rrent *
I
DD1
(SPI Enab�ed� UART disab�ed)
Operating C�rrent *
I
DD2
(SPI enab�ed� UART enab�ed)
Standb� C�rrent *
I
STB
(SPI disab�ed� UART disab�ed)
V Inp�t Low Vo�tage for RX Ports
IL
V Inp�t High Vo�tage for RX Ports
IH
I TX Port Sink C�rrent
OL
I RX Port So�rce C�rrent
OH
P���-high Resistance for SCS
R
PH
on��
Note: "*" The operating current I
SPI interface in the UART module is enabled and the UART interface is disabled. Similarly,
the operating current I
interface and UART interface are enabled. If the UART module is enabled, either I
I should be added to calculate the relevant operating current of the device for different
DD2
conditions. To calculate the standby current for the whole device, the standby current shown
above should be taken into account.
Rev. 2.10
Test Conditions
Parameter
V
DD
f =12MHz� SCK=f
CLKI
3.0V
O�tp�t no �oad
f =16MHz� SCK=f
CLKI
5.0V
O�tp�t no �oad
f =6MHz� SCK=f
CLKI
2.2V
O�tp�t no �oad
f =12MHz� SCK=f
CLKI
5.0V
O�tp�t no �oad
f =16MHz� SCK=f
CLKI
SCS=V
5.0V TXEN=1� RXEN=1�
SDI=H� RX=H�
O�tp�t no �oad
—
—
3.0V
V =0.1V
O
5.0V
3.0V
V =0.9V
O
5.0V
3.0V
5.0V
listed here is the additional current consumed when the slave
DD1
here is the additional current consumed when both the slave SPI
DD2
223
Min. Typ.
Conditions
/��
CLKI
— —
/��
CLKI
— —
/��
CLKI
— —
/��
CLKI
— —
/��
CLKI
� UARTEN=0�
DD
— —
— 0 —
— 0.7V —
DD
2.5 5.0
DD
10.0 25.0
-1.5 -3.0
DD
-5.0 -8.0
20 60
—
10 30
Ta=25°C
Max. Unit
1.0 mA
2.0 mA
�.2 mA
�.8 mA
0.6 μA
0.3V V
DD
V V
DD
— mA
— mA
— mA
— mA
100 kΩ
50 kΩ
or
DD1
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