DS89C420 Dallas Semiconducotr, DS89C420 Datasheet - Page 52

• Manufacturer Part Number: DS89C420
• Description: Ultra-High-Speed Microcontroller
• Manufacturer: Dallas Semiconducotr

EXTERNAL CLOCK CHARACTERISTICS
(V
*Specifications to -40°C are guaranteed by design and not production tested.
SERIAL PORT MODE 0 TIMING CHARACTERISTICS
(V
*Specifications to -40°C are guaranteed by design and not production tested.
Note: SM2 is the serial port 0, mode bit 2. When serial port 0 is operating in mode 0 (SM0 = SM1 = 0), SM2 determines the number of crystal clocks in a
serial-port clock cycle.
Clock Cycle Time
SM2 = 0
SM2 = 1
Output Data Setup to Clock Rising
SM2 = 0
SM2 = 1
Output Data Hold to Clock Rising
SM2 = 0
SM2 = 1
Input Data Hold after Clock Rising
SM2 = 0
SM2 = 1
Clock Rising Edge to Input Data Valid
SM2 = 0
SM2 = 1
CC
Clock High Time
Clock Low Time
Clock Rise Time
Clock Fall Time
CC
= 4.5V to 5.5V; T
= 4.5V to 5.5V; T
PARAMETER
PARAMETER
A
A
= -40°C to +85°C)*
= -40°C to +85°C)*
SYMBOL
t
t
t
t
CHCX
CLCX
CLCH
CHCL
SYMBOL
t
t
t
t
t
QVXH
XHQX
XHDX
XHDV
XLXL
MIN
52 of 59
10
10
360
120
200
40
50
20
0
0
MIN
MAX
33MHz
5
5
MAX
200
40
UNITS
10t
3t
2t
t
12t
4t
0
0
100
CLCL
ns
ns
ns
ns
CLCL
CLCL
CLCL
CLCL
CLCL
MIN
- 100
- 10
- 10
VARIABLE
-
3t
MAX
10t
CLCL
CLCL
- 50
100
DS89C420
-
MAX
ns
ns
ns
ns
ns