38K0 Datasheet, PDF (3/133 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

38K0 Group
PIN DESCRIPTION
Table 1. Pin description
Pin
Name
VCC, VSS
VCCE
CNVSS
Power source
Analog power
source
CNVSS
CNVSS2
VREF
DVCC
PVCC, PVSS
RESET
XIN
CNVSS2
Analog reference
voltage input
Analog power
source
Reset input
Clock input
XOUT
Clock output
USBVREF
USB reference
power source
TrON
D0+, D0-
P00–P07
USB reference
voltage output
USB upstream
I/O
I/O port P0
P10/DQ0/AN0– I/O port P1
P17/DQ7/AN7
P20–P27
I/O port P2
P30–P32
P33/ExINT
P34/ExCS
P35/ExWR
P36/ExRD
P37/ExA0
P40/ExDREQ/RxD
P41/ExDACK/TxD
P42/ExTC/SCLK
P43/ExA1/SRDY
I/O port P3
I/O port P4
P50/INT0
P51/CNTR0
P52/INT1
P53–P57
P60–P63
I/O port P5
I/O port P6
Function
Function except a port function
• Apply voltage of 3.0 V – 5.25 V (L version) to VCC, and 0 V to VSS.
• Power source pin for ports P1, P3, P4 and analog circuit. Connect this pin to VCC.
• This pin controls the operation mode of the chip. Connect this pin to VSS. In the flash memory
mode, this pin becoems VPP power source input pin.
• This pin controls the operation mode of the chip. Connect this pin to VSS.
• Reference voltage input pin for A/D converter.
• Power source pin for analog circuit.
• Connect the DVCC and PVCC pins to VCC, and the PVSS pin to VSS.
• Reset input pin for active “L”
• Input and output pins for the main clock generating circuit.
• Connect a ceramic resonator or a quartz-crystal oscillator between the XIN and XOUT pins to set
the oscillation frequency.
•If an external clock is used, connect the clock source to the XIN pin and leave the XOUT pin open.
• Power source pin for USB port circuit.
In Vcc = 4.00 to 5.25 V use the built-in USB reference voltage circuit. In Vcc = 3.60 to 4.00 V apply
3.3 V power supply from the external because use of the built-in USB reference voltage circuit is
prohibited in this voltage range. In Vcc = 3.00 to 3.60 V connect this pin to VCC because use of the
built-in USB reference voltage circuit is prohibited in this voltage range.
• Output pin to pull-up D0+ by 1.5 kΩ external resistor.
• USB upstream I/O port
• USB input level
• USB output level output structure
• 8-bit I/O port
• I/O direction register allows each pin to be individually
programmed as either input or output.
• CMOS compatible input level
• CMOS 3-state output structure
• Pull-up control is enabled.
• Key input pins (key-on wake up interrupt)
• 8-bit I/O port
• I/O direction register allows each pin to be individually
programmed as either input or output.
• CMOS compatible input level
• CMOS 3-state output structure
• A/D converter input pins
• External bus interface function pins
• 8-bit I/O port
• I/O direction register allows each pin to be individually programmed as either input or output.
• CMOS compatible input level
• CMOS 3-state output structure
• 8-bit I/O port
• I/O direction register allows each pin to be individually
programmed as either input or output.
• CMOS compatible input level
• CMOS 3-state output structure
• External bus interface function pins
• 4-bit I/O port
• I/O direction register allows each pin to be individually
programmed as either input or output.
• CMOS compatible input level
• CMOS 3-state output structure
• Serial I/O function pins
• External bus interface function pins
• 8-bit I/O port
• I/O direction register allows each pin to be individually
programmed as either input or output.
• CMOS compatible input level
• CMOS 3-state output structure
• Interrupt input pin
• Timer X funciton pin
• Interrupt input pin
• 4-bit I/O port
• I/O direction register allows each pin to be individually programmed as either input or output.
• CMOS compatible input level
• CMOS 3-state output structure
• Output large current for LED drive is enabled.
Rev.3.00 Oct 05, 2006 page 3 of 129
REJ03B0192-0300