ATMEL AT27BV400-15TC, AT27BV400-15RI, AT27BV400-12JC, AT27BV400-15RC, AT27BV400-15JC Datasheet

Features
• Fast Read Access Time - 120 ns
• Word-wide or Byte-wide Configurable
• Dual Voltage Range Operation
	– Unregulated Battery Power Supply Range, 2.7V to 3.6V
	or Standard 5V ± 10% Supply Range
• 4-Megabit Flash and Mask ROM Compatable
•	Low Power CMOS Operation
	– 20 μA Maximum Standby
•	– 10 mA Max. Active at 5 MHz for V CC = 3.6V																			4-Megabit
	JEDEC Standard Packages
	– 44-Lead PLCC																			(256K x 16 or
	– 44-Lead SOIC (SOP)
	– 48-Lead TSOP (12 mm x 20 mm)
• High Reliability CMOS Technology																				512K x 8)
	– 2,000 ESD Protection
	– 200 mA Latchup Immunity																			Unregulated
•	Rapid™	Programming Algorithm - 50 μs/word (typical)
• CMOS and TTL Compatible Inputs and Outputs																				Battery-Voltage	™
	– JEDEC Standard for LVTTL and LVBO
• Integrated Product Identification Code																				High Speed
• Commercial and Industrial Temperature Ranges
Description																				OTP EPROM
The AT27BV400 is a high performance low-power, low-voltage 4,194,304-bit one time
programmable read only memory (OTP EPROM) organized as either 256K by 16 or																				AT27BV400
512K by 8 bits. It requires only one supply in the range of 2.7 to 3.6V in normal read
																			(continued)
Pin Configurations										PLCC										Preliminary
	Pin Name		Function				A5	A6	A7	A17	NC	GND	NC	A8	A9	A10	A11
	A0 - A17		Addresses				6	5	4	3	2	1	44	43	42	41	40
						A4	7										39	A12
						A3	8										38	A13
	O0 - O15		Outputs			A2	9										37	A14
						A1	10										36	A15
	O15/A-1		Output/Address			A0	11										35	A16
						CE	12										34	BYTE/VPP
			Byte Mode/			GND	13										33	GND
	BYTE/VPP					OE	14										32	O15/A-1
			Program Supply			O8	16										30	O14
						O0	15										31	07
						O1	17	19	20	21	22	23	24	25	26	27	29	O6
	CE		Chip Enable				18										28
	OE		Output Enable				O9	O2	O10	O3	O11	NC	VCC	O4	O12	O5	O13
	NC		No Connect								TSOP
										Type 1
	SOIC (SOP)				A15	1												48	A16
					A14	2												47	BYTE/VPP
	NC	1	44	NC	A13	3												46	GND
					A12	4												45	015/A-1
	NC	2	43	NC
					A11	5												44	O7
	A17	3	42	A8
					A10	6												43	O14
	A7	4	41	A9
					A9	7												42	O6
	A6	5	40	A10
					A8	8												41	O13
	A5	6	39	A11
					NC	9												40	O5
	A4	7	38	A12
					NC	10												39	O12
	A3	8	37	A13	NC	11												38	O4
	A2	9	36	A14	NC	12												37	VCC
	A1	10	35	A15	NC	13												36	O11
	A0	11	34	A16	NC	14												35	O3
	CE	12	33	BYTE/VPP	NC	15												34	O10
	GND	13	32	GND	NC	16												33	O2
	OE	14	31	015/A-1	A17	17												32	O9
	O0	15	30	O7	A7	18												31	O1
	O8	16	29	O14	A6	19												30	O8
	O1	17	28	O6	A5	20												29	O0
	O9	18	27	O13	A4	21												28	OE	Rev. 0989A–03/98
	O2	19	26	O5	A3	22												27	GND
	O10	20	25	O12	A2	23												26	CE
	O3	21	24	O4	A1	24												25	A0
	O11	22	23	VCC
																					1

mode operation. The by-16 organization makes this part ideal for portable and hand held 16and 32-bit microprocessor systems using either regulated or unregulated battery power.

Atmel’s innovative design techniques provide fast speeds that rival 5V parts while keeping the low power consumption of a 3V supply. At VCC = 2.7V, any word can be accessed in less than 120ns. With a typical power dissipation of only 10 mW at 5mHZ and VCC = 3V, the AT27BV400 consumes less than one fifth the power of a standard 5V EPROM.

Standby mode supply current is typically less than 1 mA at 3V. The AT27BV400 simplifies system design and stretches battery lifetime even further by eliminating the need for power supply regulation.

The AT27BV400 can be organized as either word-wide or byte-wide. The organization is selected via the BYTE/VPP

pin. When BYTE/VPP is asserted high (VIH), the word-wide organization is selected and the O15/A-1 pin is used for O15 data output. When BYTE/VPP is asserted low (VIL),the byte wide organization is selected and the O15/A-1 pin is used for the address pin A-1. When the AT27BV400 is logically regarded as x16 (word-wide), but read in the bytewide mode, then with A-1= VIL the lower 8 bits of the 16-bit word are selected with A-1 = VIH the upper 8 bits of the 16bit word are selected.

The AT27BV400 is available in industry standard JEDECapproved one-time programmable (OTP) PLCC, SOIC (SOP), and TSOP packages. The device features two-line control(CE,OE) to eliminate bus contention.

With high density 256K word or 512K byte storage capability, the AT27BV400 allows firmware to be to be stored reliably and to be accessed by the system without the delays of mass storage media.

The AT27BV400 operating with VCC at 3.0V produces TTL level outputs that are compatible with standard TTL logic

Block Diagram

devices operating at VCC = 5V. At VCC = 2.7V, the part is compatible with JEDEC approved low voltage battery operation (LVBO) interface specifications. The device is also capable of standard 5-volt operation making it ideally suited for dual supply range systems or card products that are pluggable in both 3-volt and 5-volt hosts.

Atmel’s AT27BV400 has additional features that ensure high quality and efficient production use. The RapidTM Programming Algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 50μs/word. The Integrated Product Identification Code electronically identifies the device and manufacturer. This feature is used by industry standard programming equipment to select the proper programming equipment and voltages. The AT27BV400 programs exactly the same way as a standard 5V AT27C400 and uses the same programming equipment.

System Considerations

Switching between active and standby conditions via the Chip Enable pin may produce transient voltage excursions. Unless accommodated by the system design, these transients may exceed data sheet limits, resulting in device non-conformance. At a minimum, a 0.1 μF high frequency, low inherent inductance, ceramic capacitor should be utilized for each device. This capacitor should be connected between the VCC and Ground terminals of the device, as close to the device as possible. Additionally, to stabilize the supply voltage level on printed circuit boards with large EPROM arrays, a 4.7 μF bulk electrolytic capacitor should be utilized, again connected between the VCC and Ground terminals. This capacitor should be positioned as close as possible to the point where the power supply is connected to the array.

2	AT27BV400

Absolute Maximum Ratings*

Temperature Under Bias	................................ -55°C to +125°C
Storage Temperature .....................................	-65°C to +150°C
Voltage on Any Pin with	-2.0V to +7.0V(1)
with Respect to Ground ..................................
Voltage on A9 with	-2.0V to +14.0V(1)
Respect to Ground ......................................
VPP Supply Voltage with	-2.0V to +14.0V(1)
Respect to Ground .......................................

AT27BV400

*NOTICE: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Note: 1. Minimum voltage is -0.6V DC which undershoot to -2.0V for pulses of less than 20 ns. Maximum output pin voltage is Vcc + 0.75V DC which may overshoot to + 7.0V for pulses of less than 20 ns.

Operating Modes

Outputs

Mode/Pin

Ai

O0-O7

O8-O14

O15/A-1

CE

OE

BYTE/VPP

Read Word-wide

V

V

IL

X(1)

V

IH

D

OUT

D

D

IL

OUT

OUT

Read Byte-wide Upper

V

V

IL

X(1)

V

D

OUT

High Z

V

IL

IL

IH

Read Byte-wide Lower

V

V

IL

X(1)

V

D

OUT

High Z

V

IL

IL

IL

Output Disable

X(1)

VIH

X(1)

X

High Z

Standby

V

X(1)

X(1)

X(6)

High Z

IH

Rapid Program(3)

V

V

IH

Ai

V

PP

D

IL

IN

PGM Verify

X

VIL

Ai

VPP

DOUT

PGM Inhibit

V

V

IH

X(1)

V

PP

High Z

IH

A9 = V

(4)

Product Identification(5)

H

V

V

IL

A0 = V

IH

or V

IL

V

IH

Identification Code

IL

A1 - A17 = VIL

Notes: 1. X can be VIL or VIH.

2.Read, output disable, and standby modes require, 2.7V ≤ VCC ≤ 3.6V, or 4.5V ≤ VCC ≤ 5.5V.

3.Refer to the programming characteristics tables in this data sheet.

4.VH = 12.0 ± 0.5V.

5.Two identifier words may be selected. All Ai inputs are held low (VIL) except A9,which is set to VH, and A0, which is toggled low (VIL) to select the Manufacturer’s Identification word and high (VIH) to select the Device Code word.

6.Standby VCC current (ISB) is specified with VPP = VCC. VCC > VPP will cause a slight increase in ISB.

3

DC and AC Operating Conditions for Read Operation

			AT27BV400
		-12		-15
Operating Temperature (Case)	Com.	0°C - 70°C		0°C - 70°C
	Ind.	-40°C - 85°C		-40°C - 85°C
VCC Power Supply		2.7V to 3.6V		2.7V to 3.6V
		5V ± 10%		5V ± 10%

DC and Operating Characteristics for Read Operation

Symbol

Parameter

Condition

Min

Max

Units

VCC = 2.7V to 3.6V

ILI

Input Load Current

VIN = 0V to VCC

±1

μA

ILO

Output Leakage Current

VOUT = 0V to VCC

±5

μA

I

(2)

V

(1)

Read/Standby Current

V

PP

= V

CC

10

μA

PP1

PP

ISB1 (CMOS),

= VCC ± 0.3V

20

μA

I

V

(1)

Standby Current

CE

SB

CC

ISB2 (TTL), CE = 2.0 to VCC + 0.5V

100

μA

ICC

VCC Active Current

f = 5MHz, IOUT = 0 mA,

= VIL, VCC = 3.6V

10

mA

CE

VIL

Input Low Voltage

VCC = 3.0 to 3.6V

-0.6

0.8

V

VCC = 2.7 to 3.6V

-0.6

0.2 x VCC

V

VIH

Input High Voltage

VCC = 3.0 to 3.6V

2.0

VCC + 0.5

V

VCC = 2.7 to 3.6V

0.7 x VCC

VCC + 0.5

V

IOL = 2.0 mA

0.4

V

VOL

Output Low Voltage

IOL = 100 μA

0.2

V

IOL = 20 μA

0.1

V

IOH = -2.0 mA

2.4

V

VOH

Output High Voltage

IOH = -100 μA

VCC - 0.2

V

IOH = -20 μA

VCC - 0.1

V

VCC = 4.5V to 5.5V

ILI

Input Load Current

VIN = 0V to VCC

±1

μA

ILO

Output Leakage Current

VOUT = 0V to VCC

±5

μA

I

(2)

V

(1)

Read/Standby Current

V

PP

= V

CC

10

μA

PP1

PP

ISB1 (CMOS),

= VCC ± 0.3V

100

μA

I

V

(1)

Standby Current

CE

SB

CC

ISB2 (TTL), CE = 2.0 to VCC + 0.5V

1

mA

ICC

VCC Active Current

f = 5 MHz, IOUT = 0 mA,

= VIL

40

mA

CE

VIL

Input Low Voltage

-0.6

0.8

V

VIH

Input High Voltage

2.0

VCC + 0.5

V

VOL

Output Low Voltage

IOH = 2.1 mA

0.4

V

VOH

Output High Voltage

IOH = -400 μA

2.4

V

Notes: 1. VCC must be applied simultaneously or before VPP, and removed simultaneously or after VPP.

2. VPP may be connected directly to VCC except during programming. The supply current would then be the sum of ICC and IPP.

4	AT27BV400