mpc235 Megawin Technology, mpc235 Datasheet - Page 36

• Manufacturer Part Number: mpc235
• Description: Low-speed Usb Micro-controller
• Manufacturer: Megawin Technology

Port 2
Port 2 is an 8-bit I/O port; refer to port 0 for more information.
P2_BUF: Port 2 output buffer. When P2.n is configured as an output pin, it outputs the content of P2_BUF.n.
P2: Port 2 pad value.
P2_CR: P2.0 ~ P2.7 is input or output. 0: input, 1: output
P2_MR: P2.0 ~ P2.7, pull-high and CMOS/NMOS
Port 3
Port 3 is an 8-bit I/O port; refer to port 0 for more information.
P3_BUF: Port 3 output buffer. When P3.n is configured as an output pin, it outputs the content of P3_BUF.n.
P3: Port 3 pad value.
P3_CR: P3.0 ~ P3.7 is input or output. 0: input, 1: output
P3_MR: P3.0 ~ P3.7, pull-high and CMOS/NMOS
When P3 port is used as input mode, it is an interrupt source, a falling edge at any pin will set the IRQ_ST.P3. The
same event can release suspend mode (enable oscillator), and release halt mode (resume Fcpu) if RLH_EN.P3 is
set. An interrupt subroutine will be executed if IRQ_E.P3 is set.
Port 4
Port 4 is a 2-bit I/O port; refer to port 0 for more information.
P4_BUF: Port 4 output buffer. When P4.n is configured as an output pin, it outputs the content of P4_BUF.n.
P4: Port 4 pad value.
P4_CR: P4.0 ~ P4.1 is input or output. 0: input, 1: output
P4_MR: P4.0 ~ P4.1, pull-high and CMOS/NMOS
36
Address
Address
Address
00DCH
00DAH
00D2H
00D3H
00D9H
00D1H
0248H
0249H
0244H
0245H
0250H
0251H
P2_BUF
P3_BUF
P4_BUF
P2_MR
P3_MR
P4_MR
P2_CR
P3_CR
P4_CR
Name
Name
Name
P2
P3
P4
BP27
CP27
BP37
CP37
BP47
Bit 7
Bit 7
Bit 7
P27
P37
-
-
-
-
-
MPC235 Technical Summary
CP26
CP36
BP26
BP36
BP46
Bit 6
Bit 6
Bit 6
P26
P36
-
-
-
-
-
MP25
MP35
BP25
CP25
BP35
CP35
BP45
Bit 5
Bit 5
Bit 5
P25
P35
-
-
-
MP24
MP34
CP24
CP34
BP24
BP34
BP44
Bit 4
Bit 4
Bit 4
P24
P34
-
-
-
BP23
CP23
BP33
CP33
BP43
Bit 3
Bit 3
Bit 3
P23
P33
-
-
-
-
-
BP22
CP22
BP32
CP32
BP42
Bit 2
Bit 2
Bit 2
P22
P32
-
-
-
-
-
MP21
MP31
MP41
CP21
CP31
CP41
BP21
BP31
BP41
Bit 1
Bit 1
Bit 1
P21
P31
P41
MEGAWIN
MP20
MP30
MP40
BP20
CP20
BP30
CP30
BP40
CP40
Bit 0
Bit 0
Bit 0
P20
P30
P40
R
R
R
√
√
√
√
√
√
√
√
√
√
√
√
W
W
W
√
√
√
√
√
√
√
√
√
-
-
-