参数资料
型号: MB89PV950CF
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 5 MHz, MICROCONTROLLER, CQFP64
封装: 0.80 MM PITCH, PIGGY BACK, MQFP-64
文件页数: 38/110页
文件大小: 619K
代理商: MB89PV950CF
HARDWARE CONFIGURATION
2– 18
2.2 Peripherals
2.2.1 I/O Ports
The MB89950 series of microcontrollers have five parallel ports (33 pins).
Ports 0 and 1 serve as 8-bit I/O ports; port 2 serves 6-bit I/O port; port
3 serves as 4-bit I/O ports; port 4 serves as 7-bit I/O port.
Ports 0, 1, 2, 3 and 4 are also used as peripherals.
(1) List of port functions
(2) Register list
I/O port consists of the following registers.
Table 2–5 List of Port Functions
Pin
Input Type
Output
Type
Function
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
P00 to
P07
CMOS
N-ch
open drain
Parallel port 0
P07
P06
P05
P04
P03
P02
P01
P00
Segment output
SEG 27
————————————— SEG20
P10 to
P17
CMOS
N-ch
open drain
Parallel port 1
P17
P16
P15
P14
P13
P12
P11
P10
Segment port 1
SEG 35
————————————— SEG28
P20 to
P25
CMOS
N-ch
open drain
Parallel port 2
——
P25
P24
P23
P22
P21
P20
——
SEG41
———————— SEG36
P30 to
P33
CMOS
N-ch
open drain
Parallel port 3
————
P33
P32
P31
P30
LCD voltage
————
V2
V1
——
P40 to
P45
CMOS
push-pull
Parallel port 4
P46
P45
P44
P43
P42
P41
P40
Hysteresis
Timer serial/external
interrupt
INT0
SCK
SO
SI
PWC
/INT1
PWM
Peripherals
Address: 0000H
Address: 0002H
Address: 0004H
Address: 000CH
Address: 000EH
Address: 000FH
PDR0
PDR1
PDR2
PDR3
PDR4
DDR4
8 bits
R/W Port 0 data register
R/W Port 1 data register
R/W Port 2 data register
R/W Port 3 data register
R/W Port 4 data register
W
Port 4 data direction register
Initial value = 11111111B
Initial value = XXXXXXXXB
Initial value = X0000000B
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