M93S46-W datasheet(13/32 Pages) STMICROELECTRONICS

Part #	M93S46-W

Description	4 Kbit, 2 Kbit and 1 Kbit serial MICROWIRE bus EEPROM with write protection

PDF	32 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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13 / 32 page

M93S46-W M93S56-W M93S66-W

Instructions

DocID5124 Rev 7

13/32

For the meanings of An and Qn, see Table 2: "Instruction set for the M93S46" and

Table 3: "Instruction set for the M93S66, M93S56".

Figure 5: WRITE sequence

For the meanings of An and Dn, see Table 2: "Instruction set for the M93S46" and

Table 3: "Instruction set for the M93S66, M93S56".

Figure 6: WEN and WDS sequences

For the meanings of Xn, see Table 2: "Instruction set for the M93S46" and Table 3:

"Instruction set for the M93S66, M93S56".

5.3

Write to memory array (WRITE)

The Write Data to Memory instruction is composed of the Start bit plus the op-code

followed by the address and the 16 data bits to be written.

Write Enable (W) must be held High before and during the instruction. Input address and

data, on Serial Data Input (D) are sampled on the rising edge of Serial Clock (C).

MSv36052V1

WRITE

1 0

DATA IN

CODE

BUSY

READY

CHECK

STATUS

ADDR

PRE

MSv36053V1

WRITE

ENABLE

Xn X0

CODE

WRITE

DISABLE

Xn X0

CODE

PRE

M93S46-W Datasheet(PDF) 13 Page - STMicroelectronics