UPD75206CW NEC [NEC], UPD75206CW Datasheet - Page 14

• Manufacturer Part Number: UPD75206CW
• Description: 4-BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC [NEC]

14
5. PERIPHERAL HARDWARE FUNCTIONS
5.1
Port name
PORT0
PORT1
PORT2
PORT4
PORT5
PORT3
PORT6
PORTH
The following three types of I/O ports are provided:
PORTS
CMOS input
CMOS I/O
P-ch open-drain, high-voltage, high-current output : 4
Total
4-bit input
4-bit I/O
4-bit output
Function
Can always be read or tested regardless of operation mode of
multiplexed pin.
Can always be read or tested. P10 and P11 are provided with
noise rejection function.
Can be set in input or output mode in 4-bit units. Ports 4 and 5 P23 is multiplexed witn BUZ
can be usd in pairs to input/output 8-bit data.
Ports 4 and 5 can directly drive LED.
Can be set in input or output mode in 1-bit units. Port 6 can be
connected to internal pull-down resistor by the mask option.
P-ch open-drain, high-voltage, high-current output port. Can
directly drive FIP and LED. Can be connected to internal pull-
down resistor in 1-bit units by the mask option.
Operation, feature
Table 5-1 Port Function
: 8
: 20
: 32
and INT4 pins.
TI0 pins.
Multiplexed with SI, SO, SCK,
Multiplexed witn INT0-2 and
pin.
Multiplexed with T10-T13
pins.
Remarks:
PD75206