ZAMC4100 Datasheet, PDF (25/155 Pages) Integrated Device Technology – Actuator and Motor Controller

ZAMC4100 Datasheet
1.3.4. System Power-up Timing
Refer to Figure 1.3 and Table 1.17 for the definitions of the power-up and reset timing parameters.
Table 1.17 System Power-up and Reset Timing Parameters
Parameter
Symbol
Min. Typ. Max. Unit
Power-on-reset (POR) hold time
tHDPOR
10
-
80
µs
Power-up timer delay
MCU supply check time ¹⁾
Charge pump voltage settling time ²⁾
tPWRT
tMSC
tCP_STL
0.32 0.78 1.24 ms
1.1 1.66 2.5
ms
-
-
2
ms
MCU reset pulse duration generated by the watchdog
timer (WDT) ³⁾
tMCU_RST
-
8
-
µs
System reset pulse duration generated by WDT
tSYS_RST
0.4 0.95 1.5
ms
1) Time window in which the valid flags for both MCU supplies are expected. For more information, refer to section 3.1.
2) The charge pump is considered as settled when the ZAMC4100 supply voltage is in the nominal operating range specified by parameter VSUP (see
Table 1.4).
3) Parameters calculated for the typical value of OSCL frequency.
Figure 1.3 ZAMC4100 System Power-Up Sequence
VDDE
TYP
Vrise
PORTH
Vfall
porb
tHDPOR
rstn
tPWRT
Analog
Circuitry _{UNSUP SETTLING}
Charge
Pump _UNSUP
SUPLIED
STABLE
tCP_STL
SETTLING
STABLE
PORHYST
tHDPOR
tPWRT
SETTLING
SUPPLIED
STABLE
tCP_STL
SETTLING
t
t
t
t
STABLE
t
© 2016 Integrated Device Technology, Inc.
25
January 26, 2016