MC33394DH Freescale Semiconductor, MC33394DH Datasheet - Page 20

• Manufacturer Part Number: MC33394DH
• Description: IC POWER SUPPLY MULT-OUT 44-HSOP
• Manufacturer: Freescale Semiconductor

Specifications of MC33394DH

• Applications: Motorola MPC55x, MPC56x Microprocessors
• Interface: SPI Serial
• Voltage - Supply: 4 V ~ 26.5 V
• Package / Case: 44-BSOP (0.433", 11.00mm Width) Exposed Pad
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

1 Module connected to the battery, VKAM starts to regulate, /PORESET is released after VKAM is in regulation for 10 ms.
2 VIGN is applied, 33394 starts power up sequence.
3 VDDH, VDD3_3, VDDL are stable and in regulation before /PRERESET and /HRESET are released (with a HRT delay
4 Any of VDDH, VDD3_3, VDDL voltages out of regulation initiate /PRERESET asserted. Power down sequence initiated.
5 /HRESET is asserted 0.7
6 When fault is removed and VDDH, VDD3_3, VDDL are in regulation, the /PRERESET and /HRESET outputs are released
7 When VKAM goes out of regulation limits (4% below its nominal value), /PORESET, /PRERESET and /HRESET (/HRESET
8 33394 initiates power down sequence.
9 Fault on VKAM removed, the 33394 initiates the start up sequence.
10 When VDDH, VDD3_3, VDDL are in regulation again, the /PRERESET and /HRESET outputs are released (with an HRT
11 /PORESET is released with a 10 ms delay after the fault on VKAM was removed.
* VKAM voltage level for MPC55x devices is 3.3 V and for MPC56x devices is 2.6 V.
20
/PRERESET
/PORESET
programmable by an external capacitor and resistor, HRT pin).
(with an HRT delay).
with 0.7
delay).
/HRESET
33394
Output
VDD3_3
VDDH
VKAM
VDDL
*NOTE: VDDL = 2.6 V for MPC565
VIGN
m
s delay) are asserted – see Note 1.
HRT DELAY
0 V
10ms
1
2
3
LESS THAN 3.1 V
m
s after /PRERESET
POWER UP SEQUENCE
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 6. 33394 Power Up/Down Sequence
5
4
0.7
Figure 5. 33394 Timing Diagram
m
Go to: www.freescale.com
s
6
VDD3_3 = 3.3V*
VDD3_3 = 3.3 V
VDDL = 2.6 V*
VDDH = 5.0V
VKAM = 2.6V
VDDH = 5.0 V
VDDL = 2.6V
HRT DELAY
33394
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
2.6V
2.6V
2.6V
* VDD3_3 = 3.3V (not used by MPC56x)
7
POWER DOWN SEQUENCE
8
HRT DELAY
0.7
m
s
9
11
10
0.7
m
s
MPC56X
Supply Input
VDDH, VDDA,
VFLASH5
NVDDL, QVDDL,
VDD, VDDSYN,
VDDF
KAPWR,
VDDSRAM1,2,3
VDDRTC
PORESET
IRQ0
HRESET
5.0V
2.6V