XE8806A datasheet(9/143 Pages) SEMTECH

Part #	XE8806A

Description	Ultra Low-Power Low-Voltage

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Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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1-7

XE8806A/XE8807A

1.2.5 Bare die XE8807A

The circuit is also available in bare die for chip on board assembly. All VBAT pins and all VSS pins should be

connected together. The substrate of the circuit is connected to VSS.

(123, 3236)

PB(6)

(123,2970)

VBAT

(123, 2658)

PB(7)

(123,2345)

PD(5)

(123,2113)

PA(5)

(123,1386)

PA(6)

(123,1072)

PD(6)

(123, 835)

TEST

(123, 545)

VSS

(123, 310)

VREG

4050µm

PB(1)

(3787,3078)

PB(0)

(3787,2714)

PD(2)

(3787,2354)

PA(2)

(3787,2082)

PA(1)

(3787,1530)

PD(1)

(3787,1178)

NRESET (3787, 913)

VSS

(3787, 588)

VPP

(3787, 340)

XEMICS

Figure 1-6. Die dimension and pin location of the XE8807A

1.3 Pin assignment

The table below gives a short description of the different pin assignments.

Assignment

VBAT

Positive power supply

VSS

Negative power supply

VREG

Connection for the mandatory external capacitor of the voltage regulator

VPP

High voltage supply for flash memory programming (NC in ROM versions)

NRESET

Resets the circuit when the voltage is low

TEST

Sets the pin to flash programming mode

XIN/XOUT

Quartz crystal connections, also used for flash memory programming

PA(7:0)

Parallel input port A pins

PB(7:0)

Parallel I/O port B pins

PD(7:0)

Parallel I/O port D pins

Table 1-1. Pin assignment

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XE8806A Datasheet(PDF) 9 Page - Semtech Corporation

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