MICRF620 Micrel Inc, MICRF620 Datasheet - Page 10

• Manufacturer Part Number: MICRF620
• Manufacturer: Micrel Inc

Specifications of MICRF620

• Operating Temperature (min): -20C
• Operating Temperature Classification: Commercial
• Modulation Type: FSK
• Lead Free Status / Rohs Status: Not Compliant

Programming Interface Timing
Figure 4 and Table 6 show the timing specification for the 3-wire serial programming interface.
Micrel, Inc.
July 2006
Symbol
Tper
Thigh
Tlow
tfall
trise
Tcsr
Tcsf
Twrite
Tread
Parameter
Min. period of SCLK (Voltage dividers on IO lines will slow down the
write/read frequency)
Min. high time of SCLK
Min. low time of SCLK
Max. time of falling edge of SCLK
Max. time of rising edge of SCLK
Max. time of rising edge of CS to falling edge of SCLK
Min. delay from rising edge of CS to rising edge of SCLK
Min. delay from valid IO to falling edge of SCLK during a write operation
Min. delay from rising edge of SCLK to valid IO during a read operation
(assuming load capacitance of IO is 25pF)
IO
SCLK
CS
Table 6. Timing Specification for the 3-wire Programming Interface
Tcsr
A6
Address Register
traise
A5
Figure 4. Programming Interface Timing
tfall
Tper
A0
RW
Tlow
Thigh
10
D7
Tread
D6
Data Register
Twrite
D2
D1
Min.
50
20
20
75
0
5
0
D0
LOAD
Values
Tscl
Typ.
MICRF620/MICRF620Z
Max.
1
1
M9999-120205
Units
ns
ns
ns
µs
µs
ns
ns
ns
ns