HT48CA0-2 Holtek Semiconductor, HT48CA0-2 Datasheet - Page 2

• Manufacturer Part Number: HT48CA0-2
• Description: (HT48RA0-2 / HT48CA0-2) Remote 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
Pin Assignment
Pin Description
Absolute Maximum Ratings
Supply Voltage ...........................V
Input Voltage..............................V
Rev. 1.50
PA0~PA7
PB0, PB1
PB2~PB5
PC0/REM
VDD
VSS
OSC2
OSC1
RES
Pin 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
O
O
I
I
I
Wake-up or
Wake-up
or None
Level or
Option
Crystal
Carrier
or RC
Code
None
SS
SS
0.3V to V
0.3V to V
Bidirectional 8-bit input/output port with pull-high resistors. Each bit can be de-
termined as NMOS output or Schmitt trigger input by software instructions.
2-bit bidirectional input/output lines with pull-high resistors. Each bit can be de-
termined as NMOS output or Schmitt trigger input by software instructions.
Each bit can also be configured as wake-up input by code option.
4-bit Schmitt trigger input lines with pull-high resistors. Each bit can be config-
ured as a wake-up input by code option.
Level or carrier output pin
PC0 can be set as CMOS output pin or carrier output pin by code option.
Positive power supply
Negative power supply, ground
OSC1, OSC2 are connected to an RC network or a crystal (determined by
code option) for the internal system clock. In the case of RC operation, OSC2
is the output terminal for 1/4 system clock (NMOS open drain output).
Schmitt trigger reset input. Active low.
DD
SS
+4.0V
+0.3V
2
Storage Temperature ............................ 50 C to 125 C
Operating Temperature........................... 40 C to 85 C
Description
HT48RA0-2/HT48CA0-2
July 23, 2004