M58BW16F datasheet(23/81 Pages) STMICROELECTRONICS

23 / 81 page

M58BW16F, M58BW32F

Signal descriptions

23/81

2.14

Supply Voltage (VDD)

The Supply Voltage, VDD, is the core power supply. All internal circuits draw their current

from the VDD pin, including the Program/Erase Controller.

2.15

Output Supply Voltage (VDDQ)

The Output Supply Voltage, VDDQ, is the output buffer power supply for all operations (Read,

Program and Erase) used for DQ0-DQ31 when used as outputs.

2.16

Input Supply Voltage (VDDQIN)

The Input Supply Voltage, VDDIN, is the power supply for all input signal. Input signals are: K, B,

L, W, GD, G, E, A0-Amax and DQ0-DQ31, when used as inputs.

2.17

Ground (VSS and VSSQ)

The Ground VSS is the reference for the internal supply voltage VDD. The Ground VSSQ is

the reference for the output and input supplies VDDQ, and VDDQIN. It is essential to connect

VSS and VSSQ together.

Note:

A 0.1µF capacitor should be connected between the Supply Voltages, VDD, VDDQ and VDDIN

and the Grounds, VSS and VSSQ to decouple the current surges from the power supply. The

PCB track widths must be sufficient to carry the currents required during all operations of

the parts, see Table 17: DC characteristics, for maximum current supply requirements.

2.18

Don’t Use (DU)

This pin should not be used as it is internally connected. Its voltage level can be between

VSS and VDDQ or leave it unconnected.

2.19

Not Connected (NC)

This pin is not physically connected to the device.

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