Datasheet

CY7C68013A, CY7C68014A
CY7C68015A, CY7C68016A
Document #: 38-08032 Rev. *V Page 22 of 66
3.1 CY7C68013A/15A Pin Descriptions
The FX2LP pin descriptions follow.
[10]
Table 10. FX2LP Pin Descriptions
128
TQFP
100
TQFP
56
SSOP
56
QFN
56
VFBGA
Name Type Default Description
10 9 10 3 2D AVCC Power N/A Analog VCC. Connect this pin to 3.3V power source.
This signal provides power to the analog section of the
chip.
17 16 14 7 1D AVCC Power N/A Analog VCC. Connect this pin to 3.3V power source.
This signal provides power to the analog section of the
chip.
13 12 13 6 2F AGND Ground N/A Analog Ground. Connect to ground with as short a path
as possible.
20 19 17 10 1F AGND Ground N/A Analog Ground. Connect to ground with as short a path
as possible.
19 18 16 9 1E DMINUS I/O/Z Z USB D– Signal. Connect to the USB D– signal.
18 17 15 8 2E DPLUS I/O/Z Z USB D+ Signal. Connect to the USB D+ signal.
94 – – – – A0 Output L 8051 Address Bus. This bus is driven at all times.
When the 8051 is addressing internal RAM it reflects
the internal address.
95 – – – – A1 Output L
96 – – – – A2 Output L
97 – – – – A3 Output L
117 – – – – A4 Output L
118 – – – – A5 Output L
119 – – – – A6 Output L
120 – – – – A7 Output L
126 – – – – A8 Output L
127 – – – – A9 Output L
128 – – – – A10 Output L
21 – – – – A11 Output L
22 – – – – A12 Output L
23 – – – – A13 Output L
24 – – – – A14 Output L
25 – – – – A15 Output L
59 – – – – D0 I/O/Z Z 8051 Data Bus. This bidirectional bus is high
impedance when inactive, input for bus reads, and
output for bus writes. The data bus is used for external
8051 program and data memory. The data bus is active
only for external bus accesses, and is driven LOW in
suspend.
60 – – – – D1 I/O/Z Z
61 – – – – D2 I/O/Z Z
62 – – – – D3 I/O/Z Z
63 – – – – D4 I/O/Z Z
86 – – – – D5 I/O/Z Z
87 – – – – D6 I/O/Z Z
88 – – – – D7 I/O/Z Z
39 – – – – PSEN# Output H Program Store Enable. This active-LOW signal
indicates an 8051 code fetch from external memory. It
is active for program memory fetches from
0x4000–0xFFFF when the EA pin is LOW, or from
0x0000–0xFFFF when the EA pin is HIGH.
Note
10. Unused inputs must not be left floating. Tie either HIGH or LOW as appropriate. Outputs should only be pulled up or down to ensure signals at power up and in
standby. Note also that no pins should be driven while the device is powered down.