HT46R49 Holtek Semiconductor, HT46R49 Datasheet - Page 5

• Manufacturer Part Number: HT46R49
• Description: Cost-Effective A/D Type 8-Bit MCU
• Manufacturer: Holtek Semiconductor

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Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may
HT46R49
Note:
Absolute Maximum Ratings
Supply Voltage ...........................V
Input Voltage..............................V
I
Total Power Dissipation .....................................500mW
Rev. 1.30
OL
PA0~PA2
PA3/PFD
PA4/TMR
PA5/INT
PA6~PA7
PB0/AN0
PB1/AN1
PB2/AN2
PB3/AN3
PB4~PB7
PC0~PC4
PD0/PWM0
PD1/PWM1
OSC1
OSC2
RES
VDD
VSS
Pin Name
Total ..............................................................150mA
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.
1. Each pin on PA can be programmed through a configuration option to have a wake-up function.
2. Individual pins can be selected to have a pull-high resistor.
3. Pins PC2~PC4 and pin PD1/PWM1 exist but are not bonded out on the 24-pin package.
4. Unbonded pins should be setup as outputs or as inputs with pull-high resistors to conserve power.
I/O
I/O
I/O
I/O
I/O
O
I
I
Configuration
Crystal or RC
PA3 or PFD
I/O or PWM
Wake-up
Pull-high
Pull-high
Pull-high
Pull-high
Option
SS
SS
Bidirectional 8-bit input/output port. Each individual pin on this port can be config-
ured as a wake-up input by a configuration option. Software instructions deter-
mine if the pin is a CMOS output or Schmitt Trigger input. Configuration options
determine which pins on the port have pull-high resistors. Pins PA3, PA4 and PA5
are pin-shared with PFD, TMR and INT, respectively.
Bidirectional 8-bit input/output port. Software instructions determine if the pin is a
CMOS output or Schmitt Trigger input. Configuration options determine which
pins on the port have pull-high resistors. PB is pin-shared with the A/D input pins.
The A/D inputs are selected via software instructions. Once selected as an A/D in-
put, the I/O function and pull-high resistor options are disabled automatically.
Bidirectional 5-bit input/output port. Software instructions determine if the pin is a
CMOS output or Schmitt Trigger input. Configuration options determine which
pins on the port have pull-high resistors.
Bidirectional 2-bit input/output port. Software instructions determine if the pin is a
CMOS output or Schmitt Trigger input. Configuration option determines if this pin
has a pull-high resistor. The PWM output are pin-shared with pins PD0 and PD1
selected via a configuration option.
OSC1, OSC2 are connected to an external RC network or external crystal, deter-
mined by configuration option, for the internal system clock. If the RC system
clock option is selected, pin OSC2 can be used to measure the system clock at
1/4 frequency.
Schmitt Trigger reset input. Active low.
Positive power supply
Negative power supply, ground
0.3V to V
0.3V to V
DD
SS
+6.0V
+0.3V
HT46R46/C46/R47/C47/R48A/C48A/R49
5
Storage Temperature ............................ 50 C to 125 C
Operating Temperature........................... 40 C to 85 C
I
OH
Total............................................................ 100mA
Description
June 5, 2008