SMS64
Preliminary
PIN DESCRIPTIONS CONT’D
Pin
Pin
Pin Name
Description
Number Type
VGG_CAP is a charge storage connection for the internal charge pump
of the SMS64. This capacitor should be of sufficient size so as to provide
current, under varying load conditions, to the PUP outputs that are
programmed as high side drivers. For most applications this can be tied to a
01µF capacitor.
37
PWR
VGG_CAP
40
41
42
43
45
46
O
O
O
O
O
O
PUPF
PUPE
PUPD
PUPC
PUPB
PUPA
The points of use power enable (PUP) outputs are used when cascading
or sequencing external supplies such as LDO’s DC-to-DC converters or
MOSFETs.
The output can be configured as an open drain active high or active low
output. In both configurations an external pull-up resistor is required.
The output can also be configured as a high-side driver output. The
output voltage for this configuration can be set at 10.5V or 14.5V.
PACKAGE & PIN CONFIGURATION
48 PIN TQFP
VMF
VME
VMD
VMC
VMB
VMA
WLDI
1
36
35
34
VCCF
2
VCCE
VCCD
VCCC
3
4
33
32
31
30
29
28
27
26
25
VCCB
VCCA
5
6
SMS64
7
VCC_CAP
8
HEALTHY#
RST_A#
RST_B#
IRQ#
9
A2
10
11
12
A1
CS#
Summit Microelectronics, Inc
2060 2.22 10/09/03
6
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
