參數(shù)資料
型號: UPD70208HLP-16
廠商: NEC Corp.
英文描述: V40HLTM, V50HLTM 16/8, 16-BIT MICROPROCESSOR
中文描述: V40HLTM,V50HLTM 16 / 8,16位微處理器
文件頁數(shù): 31/110頁
文件大?。?/td> 625K
代理商: UPD70208HLP-16
31
μ
PD70208H, 70216H
Data Sheet U13225EJ4V0DS00
10. SCU (SERIAL CONTROL UNIT)
The SCU performs control of serial communication (asynchronous). Its functions are a subset of the
μ
PD71051 excluding
synchronous communication. Also, what was the control word register in the
μ
PD71051 has been divided into two: a
command register and a mode register.
10.1 FEATURES
Dedicated baud rate generator incorporated (using internal clock)
Asynchronous serial communication
Clock rate: baud rate
×
16,
×
64
Baud rate: DC – 500 kbps
Character length: 7/8 bits
Transmit stop bits: 1/2 bits
Break transmission
Automatic break detection
Full-duplex double-buffer system
Parity addition/checking
Error detection: parity, overrun, framing
Interrupt generation maskable
10.2 SCU INTERNAL BLOCK DIAGRAM
Notes 1.
A0 or A1 (Set by a system I/O area register)
2.
A1 or A2 (Set by a system I/O area register)
I
SST
Status Register
SCM
Command Register
SRB
Receive Data Buffer
STB
Transmit Data Buffer
SMD
Mode Register
SIMK
Interrupt Mask Register
(8)
(8)
S
Baud Rate
Generator
Read/Write
Control
From CG
Receiver
(Including Receive Buffer)
Transmitter
(Including Transmit Buffer)
Interrupt
Generation Logic
Selector
From TCU
(TOUT1 Output)
IORD
IOWR
Note 1
Note 2
SCU Selection Signal
SRDY (External)
R
X
D (External)
T
X
D (External)
RTCLK
SINT (To INTL1)
RESET
CLOCK
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