HT46RB50 Holtek Semiconductor, HT46RB50 Datasheet - Page 3

• Manufacturer Part Number: HT46RB50
• Description: A/D Type USB 8-Bit MCU
• Manufacturer: Holtek Semiconductor

Pin Assignment
Pin Description
Rev. 1.10
PA0~PA7
PB0/AN0~
PB7/AN7
PC0/INT
PC1/TMR0
PC2/TMR1
PC3~PC7
PD0/PWM0~
PD1/PWM1
PD2~PD7
PE0/SCS
PE1/CLK
Pin Name
I/O
I/O
I/O
I/O
I/O
I/O
I/O
(nibble option)
(nibble option)
(nibble option)
(nibble option)
I/O or PWM
(bit option)
(bit option)
(bit option)
Pull-high
Wake-up
Pull-high
Pull-high
Pull-high
Pull-high
Pull-high
Options
Bidirectional 8-bit input/output port. Each bit can be configured as a
wake-up input by ROM code option. The input or output mode is controlled
by PAC (PA control register, bit option). Pull-high resistor options:
PA0~PA7, bit option, wake-up options: PA0~PA7.
Bidirectional 8-bit input/output port. Software instructions determine the
CMOS output or Schmitt trigger input with pull-high resistor (determined by
pull-high options: bit option). The PB can be used as analog input of the ana-
log to digital converter.
Bidirectional I/O lines. Software instructions determine the CMOS output or
Schmitt trigger input with pull-high resistor (determined by pull-high options:
nibble option). The PC0, PC1 PC2 are pin-shared with INT, TMR0 or TMR1,
respectively.
Bidirectional I/O lines. Software instructions determine the CMOS output or
Schmitt trigger input with pull-high resistor (determined by pull-high options:
nibble option). The PD0/PD1 are pin-shared with PWM0/PWM1 (dependent
on PWM options).
Bidirectional I/O lines. Software instructions determine the CMOS output or
Schmitt trigger input with pull-high resistor (determined by pull-high options:
nibble option). The PE0 is pin-shared with SCS. SCS is a chip select pin of
the Serial interface, Master mode is output, Slave mode is input.
Bidirectional I/O lines. Software instructions determine the CMOS output or
Schmitt trigger input with pull-high resistor (determined by pull-high options:
nibble option). The PE1 is pin-shared with CLK. CLK is a Serial interface se-
rial clock input/output (Initial is input).
3
Description
September 7, 2006
HT46RB50