MIC2563A Datasheet, PDF (10/10 Pages) Micrel Semiconductor – Dual Slot PCMCIA/CardBus Power Controller Preliminary Information

MIC2563A
RST#
SER_DATA
VCC
20
2 _DQ
19
3 _DQ
18
4 _DQ
17
5 _DQ
16
6 _DQ
15
74x175
1 CLR
9 CLK
4
DQ
2
5
DQ
7
12 _{D Q}
10
13 _{D Q}
15
4
DQ
2
Micrel
A_VPP_PGM (Pin 8)
A_VPP_VCC (Pin 7)
A_VCC5_EN (Pin 5)
A_VCC3_EN (Pin 6)
B_VPP_PGM (Pin 22)
SER_CLK
SER_LATCH
7 _DQ
14
8 _DQ
13
9 _DQ
12
10
11 ^74x574
1
5
DQ
7
12 _{D Q}
10
13 _{D Q}
15
1 CLR _74x175 ^{9 CLK}
B_VPP_VCC (Pin 21)
B_VCC3_EN (Pin 19)
B_VCC5_EN (Pin 20)
Figure 6. Interfacing the MIC2563A with a serial-output data controller. Pinouts shown are for the MIC2563A-1
and a three-wire serial controller.
Serial Control
Figure 6 shows conversion from a three-wire serial interface,
such as used by the Cirrus Logic CL-PD6730, to the standard
eight-line parallel interface used by the MIC2563A-1. This
interface requires three common, low cost 7400-series logic
ICs:
• 74x574 Octal D Flip-Flop
• 74x175 Quad Flip-Flop with Latches (two needed)
Either 3.3V or 5V logic devices may be used, depending upon
the control voltage employed by the slot logic controller. Pin
numbers in parenthesis refer to the MIC2563A-1BSM.
Gerber™ files for this P.C. board layout are available to Micrel
customers. Please contact Micrel directly.
Another serial-to-parallel solution for this application is the
74HC594, 8-bit shift register with output registers. This de-
vice contains the eight D flip-flops plus has latched outputs
suitable for this purpose.
Serial Control Adapter P.C. Board Layout
Component Key
U1 ............. MIC2563
U2, U3 ...... 74x175
U4 ............. 74x574
2-56
1997