MCP3909 Microchip Technology, MCP3909 Datasheet - Page 6

• Manufacturer Part Number: MCP3909
• Description: Energy Metering IC with SPI Interface and Active Power Pulse Output
• Manufacturer: Microchip Technology

MCP3909
FIGURE 1-1:
FIGURE 1-2:
DS22025A-page 6
TIMING CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise indicated, all parameters apply at AV
A
SDO Rise Time
SDO Fall Time
Note 1:
GND
SDO
CLK
SDI
CS
, D
2:
3:
4:
GND
HF
F
F
Parameter
If output pulse period (t
If output pulse period (t
equals 0,1,1, the HF
Specified by characterization, not production tested.
Serial timings specified and production tested with 180 pF load.
NEG
OUT0
OUT1
OUT
= 0V, MCLK = 3.58 MHz; T
Hi-z
Output Timings for Active Power Pulse Outputs and Negative Power Pin.
Serial Interface Timings showing Output, Rise, Hold, and CS Times.
t
SUCS
t
HW
t
OUT
HP
FP
HP
t
t
FW
DO
pulse time is fixed at 64 x MCLK periods or 18 µs for MCLK = 3.58 MHz
Sym
) falls below 984376*2 MCLK periods, then t
) falls below 322160*2 MCLK periods, then t
t
t
R
t
F
FS2
A
t
SU
= -40°C to +85°C.
Min
t
HD
—
—
t
FS
Typ
t
FP
2
2
t
R
t
CLK
Max
—
—
t
F
Units
FW
HW
ns
ns
DD
= 1/2 t
= 1/2 t
= DV
© 2006 Microchip Technology Inc.
t
HI
DD
FP
HP
.
t
. When F2, F1, F0
LO
= 4.5V to 5.5V,
Comment
t
DIS