Datasheet

TC654/TC655
DS21734B-page 4  2002-2013 Microchip Technology Inc.
TEMPERATURE SPECIFICATIONS
TIMING SPECIFICATIONS
2-Wire Serial Bus Interface
Logic Input High V
IH
2.1 — — V Note 2
Logic Input Low V
IL
——0.8V
Logic Output Low V
OL
——0.4VI
OL
= 3 mA
Input Capacitance SDA, SCLK C
IN
—10 15pFNote 1
I/O Leakage Current I
LEAK
-1.0 — +1.0 µA
SDA Output Low Current I
OLSDA
6——mAV
OL
= 0.6 V
Electrical Characteristics: Unless otherwise noted, all parameters apply at V
DD
= 3.0V to 5.5V
Parameters Symbol Min Typ Max Units Conditions
Temperature Ranges
Specified Temperature Range T
A
-40 — +85 °C
Operating Temperature Range T
A
-40 — +125 °C
Storage Temperature Range T
A
-65 — +150 °C
Thermal Package Resistances
Thermal Resistance, 10 Pin MSOP 
JA
—113—°C/W
Electrical Characteristics: Unless otherwise noted, all limits are specified for V
DD
= 3.0 V to 5.5 V,
-40°C <T
A
< +85°C
Parameters Sym Min Typ Max Units Conditions
SMBus Interface (See Figure 1-1)
Serial Port Frequency f
SC
0 — 100 kHz Note 1
Low Clock Period t
LOW
4.7 — — µsec Note 1
High Clock Period t
HIGH
4.7 — — µsec Note 1
SCLK and SDA Rise Time t
R
— — 1000 nsec Note 1
SCLK and SDA Fall Time t
F
— — 300 nsec Note 1
Start Condition Setup Time t
SU(START)
4.7 — — µsec Note 1
SCLK Clock Period Time t
SC
10 — — µsec Note 1
Start Condition Hold Time t
H(START)
4.0 — — µsec Note 1
Data in SetupTime to SCLK
High
t
SU-DATA
250 — — nsec Note 1
Data in Hold Time after SCLK
Low
t
H-DATA
300 — — nsec Note 1
Stop Condition Setup Time t
SU(STOP)
4.0 — — µsec Note 1
Bus Free Time Prior to New
Transition
t
IDLE
4.7 — µsec Note 1 and Note 2
Note 1: Not production tested, ensured by design, tested during characterization.
2: Time the bus must be free before a new transmission can start.
ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: Unless otherwise noted, all limits are specified for V
DD
= 3.0 V to 5.5 V,
-40°C <T
A
< +85°C.
Parameters Sym Min Typ Max Units Conditions
Note 1: Not production tested, ensured by design, tested during characterization.
2: For 5.0 V > V
DD
 5.5 V, the limit for V
IH
= 2.2 V.