ML67Q4002 OKI [OKI electronic componets], ML67Q4002 Datasheet - Page 10

• Manufacturer Part Number: ML67Q4002
• Description: 32-bit ARM-Based General-Purpose Microcontroller
• Manufacturer: OKI [OKI electronic componets]

System
RESET_N
BSEL[1:0]
OSC0
OSC1_N
CKO
CKOE_N
Debugging support.
TCK
TMS
nTRST
TDI
TDO
General-purpose I/O ports
PIOA[7:0]
PIOB[7:0]
PIOC[7:0]
PIOD[7:0]
PIOE[9:0]
PIN DESCRIPTION
OKI Semiconductor
Pin Name
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
I
I
I
I
I
I
I
I
Reset input
Boot device select signal
The selected device is mapped to BANK0 (0x0000_0000 - 0x07FF_FFFF)
after reset.
Crystal connection or external clock input.
Connect a crystal (16 MHz to 33 MHz), if used, to OSC0 and OSC1_N.
It is also possible to input a direct clock.
Crystal connection.
When not using a crystal, leave this pin unconnected.
Clock out
Clock out enable
Debugging pin. Normally connect to ground level.
Debugging pin. Normally drive at High level.
Debugging pin. Normally connect to ground level.
Debugging pin. Normally drive at High level.
Debugging pin. Normally leave open.
General-purpose port.
Not available for use as port pins when secondary functions are in use.
General-purpose port.
Not available for use as port pins when secondary functions are in use.
General-purpose port.
Not available for use as port pins when secondary functions are in use.
General-purpose port.
Not available for use as port pins when secondary functions are in use.
Note that enabling DRAM controller with DRAME_N inputs permanently
configures PIOD[7:0] for their secondary functions, making them
unavailable for use as port pins.
General-purpose port.
Not available for use as port pins when secondary functions are in use.
BSEL[1] BSEL[0]
0
0
1
0
1
*
Internal Flash (External ROM for ML674001)
External ROM
Boot mode
Boot device
Description
ML674001/67Q4002/67Q4003
Secondary
Primary/
Primary
Primary
Primary
Primary
Primary
FEDL674001-01
—
—
—
—
—
—
—
—
—
—
—
10/24
Negative
Negative
Negative
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Positive
Logic
—
—
—
—