Data Sheet S15535EJ3V0DS

10

µPD720100A

2.

ELECTRICAL SPECIFICATIONS

2.1

Buffer List

• 3 V input buffer with Pull down resister

NTEST1, NTEST2, TEST, SMC, SIN/TIN, SRMOD, AMC, SCK/TCLK, CLKSEL, TEB

• 3 V output buffer

SOT/TOUT (IOL = 9 mA), SRCLK (IOL = 3 mA)

• 3 V bi-directional buffer

LEGC (IOL = 9 mA), SRDTA (IOL = 3 mA)

• 3 V Oscillator interface

XT1/SCLK, XT2

• 5 V input buffer

VCCRST0, PIN_EN

• 5 V IOL = 12 mA N-ch Open Drain buffer

SMI0, PME0, INTA0, INTB0, INTC0, SERR0

• 5 V IOL = 6 mA 3-state Output buffer

A20S

• 5 V IOL = 12 mA 3-state Output buffer

IRO1, IRO2

• 5 V PCI Input buffer with enable (OR type)

PCLK, VBBRST0, GNT0, IDSEL

• 5 V PCI IOL = 12 mA 3-state Output buffer

REQ0

• 5 V PCI IOL = 9 mA bi-directional buffer with input enable (OR-type)

AD(31:0), CBE(3:0)0, PAR, FRAME0, IRDY0, TRDY0, STOP0, DEVSEL0, PERR0, CRUN0, IRI(1:2),

PPON(1:5), OCI(1:5)

• USB interface

DP(1:5), DM(1:5), RSDP(1:5), RSDM(1:5), PC1, PC2, RREF, SELDAT, SELCLK

Above, “5 V” refers to a 3-V buffer with 5-V tolerant circuit. Therefore, it is possible to have a 5-V connection for an

external bus, but the output level will be only up to 3 V, which is the VDD voltage. Similarly, “5 V PCI” above refers to a

PCI buffer that has a 5-V tolerant circuit, which meets the 3-V PCI standard; it does not refer to a PCI buffer that meets

the 5-V PCI standard.