HT49CV5 Holtek Semiconductor, HT49CV5 Datasheet - Page 3

• Manufacturer Part Number: HT49CV5
• Description: A/D
• Manufacturer: Holtek Semiconductor

Pin Assignment
Note:
Pin Description
Rev. 1.20
PA0/BZ
PA1/BZ
PA2
PA3/PFD
PA4~PA7
PB0/AN0~
PB3/AN3
PC6
PC7/RMT
Pin Name
Each V
DD
(V
I/O
I/O
I/O
I/O
SS
) pins must be connected to the power (ground) of the system.
Wake-up
Pull-high
Pull-high
Pull-high
Options
Buzzer
PFD
Note:The RMT is pin-shared with PC7. When PC7/RMT pin uses as the input
mode of RMT function , suggesting the user to set PC7 as input mode for
safety. And so that I/O function of PC7 will not influence the RMT input func-
tion.
Bidirectional 8-bit input/output port. Each bit can be configured as a wake-up
input by configuration option. Software instructions determine if the pin is a
CMOS output or Schmitt trigger input with or without pull-high resistor (deter-
mined by pull-high options: bit option). Pins PA0, PA1 and PA3 are
pin-shared with BZ, BZ and PFD, respectively.
Bidirectional 4-bit input/output port. Software instructions determine if the pin
is a CMOS output or Schmitt trigger input with or without pull-high resistor
(determined by pull-high option: bit option) or A/D input. Once a PB line is se-
lected 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 if the pin
is a CMOS output or Schmitt trigger input with or without pull-high resistor
(determined by pull-high option: bit option). RMT with wake-up function (both
rising and falling edge) and Schmitt trigger input with or without a pull-high re-
sistor (determined by pull-high option).
3
Description
HT49RV5/HT49CV5
April 14, 2006