IC-HT_15 Datasheet, PDF (9/45 Pages) IC-Haus GmbH – DUAL CW LASER DIODE DRIVER

iC-HT
DUAL CW LASER DIODE DRIVER
preliminary
Rev B1, Page 9/45
OPERATING REQUIREMENTS: SPI and I²C Interface
Operating Conditions: VB = 2.8 . . . 11 V , Tj = -40 . . . 125 °C
Item Symbol Parameter
No.
SPI / I²C Interface Timing
Conditions
I001 tsCCL
Setup Time:
INS/WKR = lo
NCS/A1 hi → lo before SCLK lo → hi
I002 tsDCL
Setup Time:
MOSI/A0 stable before SCLK/SCL lo
→ hi
INS/WKR = lo
I003 thDCL
Hold Time:
INS/WKR = lo
MOSI/A0 stable after SCLK/SCL lo →
hi
I004 tCLh
Signal Duration SCLK/SCL hi
INS/WKR = lo
I005 tCLI
Signal Duration SCLK/SCL lo
INS/WKR = lo
I006 thCLC
Hold Time: NCS/A1 lo after SCLK/SCL INS/WKR = lo
hi → lo
I007 tCSh
Signal Duration NCS/A1 hi
INS/WKR = lo
I008 tpCLD
Propagation Delay:
MISO/SDA stable after SCLK/SCL hi
→ lo
INS/WKR = lo, V(VDD) > 3 V, Cload = 10 pF, no
external pull-up
I009 tHIZ
MISO to HIZ delay
INS/WKR = lo
I010 f(SCLK) SPI clock frequency
Min.
20
20
20
50
50
20
50
0
0
I011 f(SCL) I²C clock frequency
Unit
Max.
ns
ns
ns
ns
ns
ns
ns
30
ns
25
ns
10
MHz
400
kHz
NCS/A1
SCLK/SCL
MOSI/A0
MISO/SDA
tsCCL
tCLH
tsDCL thDCL
tCLL
tpCLD
Figure 1: SPI interface timing
thCLC
tCSH
tHIZ