Samsung S3F80JB manual Vdd

S3F80JB

TOOL PROGRAMMING OF S3F80JB

To read/write/erase by OTP/MTP writer, the following six pins are used.

Table 1. Descriptions of Pins Used to Read/Write/Erase the Flash in Tool Program Mode

Normal Chip				During Programming
Pin Name
	Pin Name	Pin No.	I/O	Function
P3.0	SDAT	3[30]	I/O	Serial data pin. Output port when reading and input port when
				writing. SDAT (P3.0) can be assigned as an input or push-pull
				output port.
P3.1	SCLK	4[31]	I	Serial clock pin. Input only pin.
TEST	TEST	9[4]	I	Tool mode selection when TEST pin sets Logic value ‘1’. If
				user uses the flash writer tool mode (ex.spw2+ etc.), user
				should connect TEST pin to VDD.
				(S3F80JB supplies high voltage 12.5V by internal high voltage
				generation circuit.)
NRESET	nRESET	12[7]	I	Chip Initialization
VDD,	VDD,	5[32],	–	Power supply pin for logic circuit.
VSS	VSS	6[1]		VDD should be tied to +3.3 V during programming.

When writing or erasing using OTP/MTP writer, user must check the following:

—Vdd Voltage

The maximum operating voltage of S3F80JB is 3.6V. (Refer to the electrical data of S3F80JB manual.) The selection flag of Vdd must be set to 3.3V as like a figure on next page.

—Test Pin Voltage

The TEST pin on socket board for OTP/MTP writer must be connected to Vdd (3.3V). The TEST pin on socket board must not be connected Vpp(12.5V) which is generated from OTP/MTP Writer. So the specific socket board for S3F80JB must be used, when writing or erasing using OTP/MTP writer.

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