HT46R48E Holtek Semiconductor, HT46R48E Datasheet - Page 3

• Manufacturer Part Number: HT46R48E
• Description: Cost-Effective A/D Type 8-Bit OTP MCU
• Manufacturer: Holtek Semiconductor

Pin Assignment
Pin Description
Absolute Maximum Ratings
Supply Voltage ...........................V
Input Voltage..............................V
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may
Rev. 1.10
PA0~PA2
PA3/PFD
PA4/TMR
PA5/INT
PA6, PA7
PB0/AN0
PB1/AN1
PB2/AN2
PB3/AN3
PB4~PB7
PC0/SDA
PC1/SCL
PD0/PWM
RES
VDD
VSS
OSC1
OSC2
Pad Name
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 reliabil-
ity.
I/O
I/O
I/O
I/O
I/O
O
I
I
Crystal or RC
PD0 or PWM
PA3 or PFD
Wake-up
Pull-high
Pull-high
Pull-high
Pull-high
Options
SS
SS
0.3V to V
0.3V to V
Bidirectional 8-bit input/output port. Each Pin can be configured as
wake-up input by options. Software instructions determine the CMOS out-
put or Schmitt trigger input with or without pull-high resistor (determined by
pull-high options: bit option). The PFD, TMR and INT are pin-shared with
PA3, PA4 and PA5, respectively.
Bidirectional 8-bit input/output port. Software instructions determine the
CMOS output, Schmitt trigger input with or without pull-high resistor (deter-
mined by pull-high options: bit option) or A/D input.
Once a PB line is selected as an A/D input (by using software control), the
I/O function and pull-high resistor are disabled automatically.
Bidirectional 2-bit input/output port. Software instructions determine the
CMOS output or Schmitt trigger input with or without pull-high resistor (deter-
mined by pull-high options: bit option).
PC0 is wire-bonded with SDA pad of the Data EEPROM.
PC1 is wire-bonded with SCL pad of the Data EEPROM
Bidirectional I/O line. Software instructions determine the CMOS output,
Schmitt trigger input with or without a pull-high resistor (determined by
pull-high options: bit option). The PWM output function is pin-shared with
PD0 (dependent on PWM options).
Schmitt trigger reset input. Active low.
Positive power supply
Negative power supply, ground.
OSC1, OSC2 are connected to an RC network or a Crystal (determined by
options) for the internal system clock. In the case of RC operation, OSC2 is
the output terminal for 1/4 system clock.
DD
SS
+6.0V
+0.3V
3
Storage Temperature ............................ 50 C to 125 C
Operating Temperature........................... 40 C to 85 C
Description
HT46R48E
March 24, 2006