isppac-powr1220at8 Lattice Semiconductor Corp., isppac-powr1220at8 Datasheet - Page 5

• Manufacturer Part Number: isppac-powr1220at8
• Description: In-system Programmable Power Supply Monitoring, Sequencing And Margining Controller
• Manufacturer: Lattice Semiconductor Corp.

Lattice Semiconductor
Pin Descriptions (Cont.)
1. [IN1...IN6] are inputs to the PLD. The thresholds for these pins are referenced by the voltage on VCCINP.
2. IN1 pin can also be controlled through JTAG interface.
3. [IN2..IN6] can also be controlled through I
4. The VMON inputs can be biased independently from VCCA. Unused VMONs should be tied to GNDD.
5. The VMONGS inputs are the ground sense line for each given VMON pin. The VMON input pins along with the VMONGS ground sense
6. Open-drain outputs require an external pull-up resistor to a supply.
7. VCCD and VCCA pins must be connected together on the circuit board.
8. GNDA and GNDD pins must be connected together on the circuit board.
9. The RESETb pin should only be used for cascading two or more ispPAC-POWR1220AT8 devices.
81, 99, 100
26, 27, 29,
35, 41, 49,
76, 77, 78,
Number
pins implement a differential pair for each voltage monitor to allow remote sense at the load. VMONGS lines must be connected and are
not to exceed -0.2V - +0.3V in reference to the GNDA pin.
44, 59
73
91
95
96
34
37
28
31
30
32
92
93
TRIM8
RESETb
PLDCLK
MCLK
TDO
TCK
TMS
TDI
ATDI
TDISEL
SCL
SDA
RESERVED
NC
Name
9
Analog Output
Digital I/O
Digital Output
Digital I/O
Digital Output
Digital Input
Digital Input
Digital Input
Digital Input
Digital Input
Digital Input
Digital I/O
Pin Type
2
C/SMBus interface.
-320mV to +320mV
from Programmable
DAC Offset
0V to 3.96V
0V to 3.96V
0V to 3.96V
0V to 5.5V
0V to 5.5V
0V to 5.5V
0V to 5.5V
0V to 5.5V
0V to 5.5V
0V to 5.5V
0V to 5.5V
Voltage Range
1-5
ispPAC-POWR1220AT8 Data Sheet
Trim DAC Output 8
Device Reset (Active Low)
250kHz PLD Clock Output (Tristate), CMOS
Output
8MHz Clock I/O (Tristate), CMOS Drive
JTAG Test Data Out
JTAG Test Clock Input
JTAG Test Mode Select
JTAG Test Data In, TDISEL pin = 1
JTAG Test Data In (Alternate), TDISEL Pin = 0
Select TDI/ATDI Input
I
I
Reserved - Do Not Connect
No Internal Connection
2
2
C Serial Clock Input
C Serial Data, Bi-directional Pin
Description