DS89C430-DS89C450 Dallas Semiconducotr, DS89C430-DS89C450 Datasheet - Page 10
DS89C430-DS89C450
Manufacturer Part Number
DS89C430-DS89C450
Description
Ultra-High-Speed Flash Microcontrollers
Manufacturer
Dallas Semiconducotr
Datasheet
1.DS89C430-DS89C450.pdf
(47 pages)
- Current page: 10 of 47
- Download datasheet (792Kb)
Figure 4. Serial Port Timing
SERIAL PORT (SYNCHRONOUS MODE)
SM2 = 1
SERIAL PORT (SYNCHRONOUS MODE)
SM2 = 0
WRITE TO SCON
TO CLEAR RI
WRITE TO SBUF
RXD DATA OUT
TXD CLOCK
RXD DATA IN
TXD CLOCK
WRITE TO SBUF
RXD DATA OUT
WRITE TO SCON
TO CLEAR RI
TXD CLOCK
RXD DATA IN
TXD CLOCK
PSEN
TXD CLOCK
ALE
TI
R1
PSEN
ALE
TI
R1
TDX CLOCK = XTAL FREQ/4
TDX CLOCK = XTAL FREQ/12
t
XHDV
t
QVXH
D0
t
D0
XLXL
t
XHQX
DI
DI
D2
D0
D2
D0
10 of 47
D3
t
XHDX
D3
1/(XTAL FREQ/12)
D4
D4
DI
D5
DI
D5
D6
D6
D6
D6
D7
D7
D7
D7
TRANSMIT
RECEIVE
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