UPD70208HGF-16-3B9 NEC, UPD70208HGF-16-3B9 Datasheet - Page 31

• Manufacturer Part Number: UPD70208HGF-16-3B9
• Description: V40HLTM/ V50HLTM 16/8/ 16-BIT MICROPROCESSOR
• Manufacturer: NEC

10. SCU (SERIAL CONTROL UNIT)
synchronous communication. Also, what was the control word register in the PD71051 has been divided into two: a
command register and a mode register.
10.1 FEATURES
10.2 SCU INTERNAL BLOCK DIAGRAM
The SCU performs control of serial communication (asynchronous). Its functions are a subset of the PD71051 excluding
•
•
•
•
•
•
•
•
•
•
•
•
Notes 1. A0 or A1 (Set by a system I/O area register)
Dedicated baud rate generator incorporated (using internal clock)
Asynchronous serial communication
Clock rate: baud rate
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
2. A1 or A2 (Set by a system I/O area register)
Interrupt Mask Register
Receive Data Buffer
Transmit Data Buffer
Command Register
Status Register
Mode Register
16,
SIMK
SCM
SMD
SST
SRB
STB
64
From CG
Data Sheet U13225EJ4V0DS00
(8)
(8)
(Including Transmit Buffer)
(Including Receive Buffer)
Generation Logic
RESET
Transmitter
Read/Write
Baud Rate
Generator
Receiver
Interrupt
Control
CLOCK
Selector
RTCLK
SINT (To INTL1)
IORD
IOWR
Note 1
Note 2
SCU Selection Signal
PD70208H, 70216H
From TCU
(TOUT1 Output)
SRDY (External)
R
T
X
X
D (External)
D (External)
31