Datasheet > AT88SC0104C_07

AT88SC0104C_07

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
爱特美尔 - ATMEL		/
页数	文件大小	规格书
18页	425K
描述
CryptoMemory 1 Kbit

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AT88SC0104C_07 数据手册

AT88SC0104C

Reset (RST)

The AT88SC0104C provides an ISO 7816-3 compliant asynchronous answer to reset

sequence. When the reset sequence is activated, the device will output the data pro-

grammed into the 64-bit answer-to-reset register. An internal pull-up on the RST input

pad allows the device to be used in synchronous mode without bonding RST. The

AT88SC0104C does not support the synchronous answer-to-reset sequence.

Serial Data (SDA/IO)

The SDA pin is bidirectional for serial data transfer. This pin is open-drain driven and

may be wired with any number of other open drain or open collector devices. An exter-

nal pull-up resistor should be connected between SDA and V_CC. The value of this

resistor and the system capacitance loading the SDA bus will determine the rise time of

SDA. This rise time will determine the maximum frequency during read operations. Low

value pull-up resistors will allow higher frequency operations while drawing higher aver-

age power. SDA/IO information applies to both asynchronous and synchronous

protocols.

When the synchronous protocol is used, the SCL/CLK input is used to positive edge

clock data into the device and negative edge clock data out of the device.

Table 2. DC Characteristics

Applicable over recommended operating range from V_CC= +2.7 to 5.5V, T_AC= -40^oC to +85^oC (unless otherwise noted)

Symbol

Parameter

Test Condition

Min

2.7

Typ

Max

5.5

Units

V_CC

Supply Voltage

I_CC

I_SB

V_IL

V_IH

I_IL

Supply Current (V_CC= 5.5V)

Standby Current (V_CC= 5.5V)

SDA/IO Input Low Threshold⁽¹⁾

SCL/CLK Input Low Threshold⁽¹⁾

RST Input Low Threshold⁽¹⁾

SDA/IO Input High Threshold⁽¹⁾

SCL/CLK Input High Threshold⁽¹⁾

RST Input High Threshold⁽¹⁾

SDA/IO Input Low Current

SCL/CLK Input Low Current

RST Input Low Current

Async READ at 3.57MHz

Async WRITE at 3.57MHz

Synch READ at 1MHz

Synch WRITE at 1MHz

V_IN= V_CCor GND

100

V_CCx 0.2

V_CC

V_CCx 0.7

V_CC

0 < V_IL< V_CCx 0.15

V_CCx 0.7 < V_IH< V_CC

20K ohm external pull-up

I_OL= 1mA

I_IL

I_IH

SDA/IO Input High Current

SCL/CLK Input High Current

RST Input High Current

I_IH

100

I_IH

150

V_OH

V_OL

SDA/IO Output High Voltage

SDA/IO Output Low Voltage

SDA/IO Output High Current

V_CCx 0.7

V_CC

V_CCx 0.15

I_OH

V_OH

Note:

1. V_ILmin and V_IHmax are reference only and are not tested.

2021HS–SMEM–04/07

1 234 5 6 7...18

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