![](http://datasheet.mmic.net.cn/200000/OR3T55-4BA256I_datasheet_15087465/OR3T55-4BA256I_160.png)
160
Lucent Technologies Inc.
Preliminary Data Sheet, Rev. 1
ORCA Series 3 FPGAs
September 1998
U12
PB8C
PB9C
PB11C
I/O
Y13
PB8D
PB9D
PB11D
I/O
W13
PB9A
PB10A
PB12A
I/O-HDC
V13
PB9B
PB10B
PB12B
I/O
Y14
PB9C
PB10C
PB12C
I/O
W14
PB9D
PB10D
PB12D
I/O
Y15
PB10A
PB11A
PB13A
I/O-LDC
V14
PB10B
PB11B
PB13B
I/O
W15
PB10C
PB11C
PB13C
I/O
Y16
PB10D
PB11D
PB13D
I/O
U14
—
PB12A
PB14A
I/O
V15
—
PB12B
PB14D
I/O
W16
PB11A
PB12C
PB15A
I/O-INIT
Y17
—
PB15D
I/O
V16
—
PB12D
PB16A
I/O
W17
PB11B
PB13A
PB16D
I/O
Y18
PB11C
PB13B
PB17A
I/O
U16
PB11D
PB13C
PB17C
I/O
V17
PB12A
PB13D
PB17D
I/O
W18
PB12B
PB14A
PB18A
I/O
Y19
PB12C
PB14B
PB18B
I/O
V18
PB12D
PB14C
PB18C
I/O
W19
—
PB14D
PB18D
I/O
Y20
PDONE
DONE
W20
PRESETN
RESET
V19
PPRGMN
PRGM
U19
PR12A
PR14A
PR18A
I/O-M0
U18
—
PR14C
PR18C
I/O
T17
—
PR14D
PR18D
I/O
V20
—
PR13A
PR17A
I/O
U20
PR12B
PR13B
PR17B
I/O
T18
PR12C
PR13C
PR17C
I/O
T19
PR12D
PR13D
PR17D
I/O
T20
PR11A
PR12A
PR16A
I/O
R18
PR11B
PR12B
PR16D
I/O
P17
PR11C
PR12C
PR15A
I/O
R19
PR11D
PR12D
PR15C
I/O
R20
PR10A
PR11A
PR15D
I/O-M1
P18
PR10B
PR11B
PR14A
I/O
P19
PR10C
PR11C
PR14D
I/O
P20
PR10D
PR11D
PR13A
I/O
N18
PR9A
PR10A
PR12A
I/O-M2
N19
PR9B
PR10B
PR12B
I/O
N20
PR9C
PR10C
PR12C
I/O
M17
PR9D
PR10D
PR12D
I/O
M18
PR8A
PR9A
PR11A
I/O-M3
Pin
OR3T20
Pad
OR3T30
Pad
OR3C/T55
Pad
Function
M19
PR8B
PR9B
PR11B
I/O
M20
PR8C
PR9C
PR11C
I/O
L19
PR8D
PR9D
PR11D
I/O
L18
PR7A
PR8A
PR10A
I/O
L20
PR7B
PR8B
PR10B
I/O
K20
PR7C
PR8C
PR10C
I/O
K19
PR7D
PR8D
PR10D
I/O
K18
PECKR
I-ECKR
K17
PR6B
PR7B
PR9B
I/O
J20
PR6C
PR7C
PR9C
I/O
J19
PR6D
PR7D
PR9D
I/O
J18
PR5A
PR6A
PR8A
I/O
J17
PR5B
PR6B
PR8B
I/O
H20
PR5C
PR6C
PR8C
I/O
H19
PR5D
PR6D
PR8D
I/O
H18
PR4A
PR5A
PR7A
I/O-CS1
G20
PR4B
PR5B
PR7B
I/O
G19
PR4C
PR5C
PR7C
I/O
F20
PR4D
PR5D
PR7D
I/O
G18
PR3A
PR4A
PR6A
I/O-CS0
F19
PR3B
PR4B
PR6B
I/O
E20
PR3C
PR4C
PR5B
I/O
G17
PR3D
PR4D
PR5D
I/O
F18
PR2A
PR3A
PR4A
I/O-RD/MPI_STRB
E19
PR2B
PR3B
PR4B
I/O
D20
PR2C
PR3C
PR4D
I/O
E18
PR2D
PR3D
PR3A
I/O
D19
PR1A
PR2A
I/O-WR
C20
PR1B
PR2B
I/O
E17
PR1C
PR2C
I/O
D18
PR1D
PR2D
I/O
C19
—
PR1A
I/O
B20
—
PR1B
I/O
C18
—
PR1C
I/O
B19
—
PR1D
I/O
A20
PRD_CFGN
RD_CFG
A19
PT12D
PT14D
PT18D
I/O-SECKUR
B18
—
PT14C
PT18C
I/O
B17
PT12C
PT14B
PT18B
I/O
C17
PT12B
PT14A
PT18A
I/O
D16
PT12A
PT13D
PT17D
I/O-RDY/RCLK/MPI_ALE
A18
—
PT13C
PT17A
I/O
A17
PT11D
PT13B
PT16D
I/O
C16
PT11C
PT13A
PT16C
I/O
B16
PT11B
PT12D
PT16A
I/O
A16
PT11A
PT12C
PT15D
I/O-D7
Pin
OR3T20
Pad
OR3T30
Pad
OR3C/T55
Pad
Function
Pin Information (continued)
Table 73. OR3T20, OR3T30, and OR3C/T55 256-Pin PBGA Pinout (continued)