參數(shù)資料
型號(hào): MB89951PFM
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 5 MHz, MICROCONTROLLER, PQFP64
封裝: 0.65 MM PITCH, QFP-64
文件頁(yè)數(shù): 73/110頁(yè)
文件大?。?/td> 619K
代理商: MB89951PFM
HARDWARE CONFIGURATION
2– 50
2.2.5 8-bit Serial I/O
8-bit serial data synchronous transfer.
LSB first or MSB first can be selected for data transfer.
The 4 shift-clock mode can be selected (three internal and one external).
(1) Block diagram
Note: The SO and SCK outputs serve as UART outputs. They can be used
as the outputs of the serial I/O when the RSEL bit of the SMC2 in
the UART is 1.
(2) Register list
Peripherals
Internal-data bus
2
3
SIOF
SIOE
SCKE
SOE
CKS1
CKS0
BDS
SST
(Shift direction)
Serial data register (SDR)
SI input
Synchronizer
SO output
Synchronizer
Output enable
Internal clock
pulse
Shift-clock counter
Controller
Shift-clock
pulse select
Transfer
direction
select
Serial mode
register
(SMR)
Overflow
D0 to D7
(MSB first)
D7 to D0
(LSB first)
P43/SI
P44/SO
(Note)
P45/
SCK
(Note)
D7 to D0
IRQ5
Clear
Address: 001CH
Address: 001DH
SMR
SDR
8 bits
R/W Serial mode register
R/W Serial data register
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