Rainbow Electronics DS1616 - Manual (Page 27)

DS1616
27 of 28
SYNCHRONOUS (3-WIRE) SERIAL INTERFACE TIMING
(-40 °C to +85°C; Vcc = 5.0V ±10%)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Data to SCLK Setup t
DC
50 ns 3
SCLK to Data Hold t
CDH
70 ns 3
SCLK to Data Delay t
CDD
200 ns 3,4,5
SCLK Low Time t
CL
250 ns 3
SCLK High Time t
CH
250 ns 3
SCLK Frequency t
CLK
DC 2.0 MHz 3
SCLK Rise and Fall t
R
, t
F
500 ns
RST to SCLK Setup
t
CC
1 ms 3
SCLK to RST Hold
t
CCH
60 ns 3
RST Inactive Time
t
CWH
1 ms 3
RST to I/O High Z
t
CDZ
70 ns 3, 7
SCLK to I/O High Z t
CCZ
70 ns 3, 7
NOTES:
1. All voltages are referenced to ground,
2. The data rate f
BIT
is equal to 1/t
BIT
3. Measured with V
IH
= 3.0V or V
IL
= 0V.
4. Measured at V
OH
=2.4V or V
OL
=0.4V.
5. Load Capacitance = 50 pF.
6. Thermometer error reflects temperature error as tested during calibration.
7. Sampled with 5 pF load. Not 100% tested.
8. The internal reference of 2.04V is set so that the ADC will work down to the minimum battery
voltage of 2.7V. The ADC input voltage must not be greater than the battery voltage.
9. The Integral Non-linearity does not take into consideration the tolerance of the Voltage Reference.
ASYNCHRONOUS SERIAL INTERFACE TIMING Figure 6
RX
TX
DATA START STOP
DATA START STOP
t
TURN
t
BIT
t
BIT