TMS28F210

65536 BY 16-BIT

FLASH MEMORY

SMJS210D – DECEMBER 1992 – REVISED AUGUST 1997

7

POST OFFICE BOX 1443

operation

Modes of operation are defined in Table 1.

FUNCTION

MODE

DBW

VPP§

E

G

A0

A9

W

DQ0 – DQ15

MODE

DBW

PACKAGE

11

12

30

31

1

9

13 – 20, 22 – 29

FN PACKAGE

2

3

22

24

35

43

4 – 11, 14 – 21

Read

VPPL

VIL

VIL

X

X

VIH

Data Out

Output Disable

VPPL

VIL

VIH

X

X

VIH

Hi-Z

Read

Standby and Write Inhibit

VPPL

VIH

X

X

X

X

Hi-Z

Algorithm Selection Mode

VPPL

VIL

VIL

VIL

VID

VIH

Mfr. Equivalent Code 0097h

Algorithm-Selection Mode

VPPL

VIL

VIL

VIH

VID

VIH

Device Equivalent Code 00E5h

Read

VPPH

VIL

VIL

X

X

VIH

Data Out

Read/

Output Disable

VPPH

VIL

VIH

X

X

VIH

Hi-Z

Write

Standby and Write Inhibit

VPPH

VIH

X

X

X

X

Hi-Z

Write

VPPH

VIL

VIH

X

X

VIL

Data In

† See the recommended operating conditions table.

‡ X can be VIL or VIH.

§ VPPL ≤ VCC + 2 V; VPPH is the programming voltage specified for the device.

read/output disable

When the outputs of two or more TMS28F210s are connected in parallel on the same bus, the output of any

particular device in the circuit can be read with no interference from the competing outputs of other devices. To

read the output of the TMS28F210, a low-level signal is applied to the E and G pins. All other devices in the circuit

should have their outputs disabled by applying a high-level signal to one of these pins.

standby and write inhibit

with a high CMOS level on E. In this mode, all outputs are in the high-impedance state. The TMS28F210 draws

active current when it is deselected during programming, erasure, or program/erase verification. It continues

to draw active current until the operation is terminated.

algorithm-selection mode

The algorithm-selection mode provides access to a binary code that identifies the correct programming and

A0. All other addresses must be held low. A0 low selects the manufacturer-equivalent code 0097h, and A0 high

selects the device-equivalent code 00E5h, as shown in Table 2.

IDENTIFIER

PINS#

IDENTIFIER

A0

DQ7

DQ6

DQ5

DQ4

DQ3

DQ2

DQ1

DQ0

HEX

Manufacturer-Equivalent Code

VIL

1

0

0

1

0

1

1

1

0097

Device-Equivalent Code

VIH

1

1

1

0

0

1

0

1

00E5

¶ E = G = A1 – A8 = A10 – A15 = VIL, A9 = VID, VPP = VPPL

# D8 – D15 are not shown in the table because the upper eight data bits read 0.