HT45B0F
Pin Assignment
S D I
1
2
3
4
5
6
7
8
H T 4 5 B 0 F
1 6 N S O P -A
S D O
S C K
S C S
C L K I
IN T
N C
N C
1 6
1 5
1 4
1 3
1 2
1 1
1 0
9
N C
N C
N C
N C
T X
R X
V D D
V S S
Pin Description
Pin Name
SDI
SDO
SCK
SCS
CLKI
INT
I/O
I
O
I
I
I
O
Description
Serial I/O data input
SDI is high impedance when SCS = HIGH
Serial I/O data output.
SDO is high impedance when SCS = HIGH
Serial I/O clock input
SCK is high impedance when SCS = HIGH
Serial I/O Chip select input, active low
SCS has an internal pull-high resistor.
External clock input
Interrupt output (CMOS output structure).
Connected to the MCU¢s external interrupt input
UART RX Pin
If UARTEN = 1 and RXEN = 1, then RX is the UART serial data input
If UARTEN = 0 or RXEN = 0, then RX is high impedance
UART TX Pin
If UARTEN = 1 and TXEN = 1, then TX is the UART serial data output
If UARTEN = 0 or TXEN = 0, then TX is high impedance
Positive power supply
Negative power supply, ground
No connection
RX
I
TX
VDD
VSS
NC
O
¾
¾
¾
Absolute Maximum Ratings
Supply Voltage ...........................V
SS
-0.3V
to V
SS
+6.0V
Input Voltage..............................V
SS
-0.3V
to V
DD
+0.3V
I
OL
Total ................................................................35mA
Total Power Dissipation .....................................135mW
Note: These are stress ratings only. Stresses exceeding the range specified under
²Absolute
Maximum Ratings² may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed
in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.
Storage Temperature ..........................-50°C to +150°C
Operating Temperature.........................-40°C to +85°C
I
OH
Total..............................................................-35mA
Rev. 1.00
2
June 7, 2011
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
