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MCP79411T-I/ST 其他数据使用手册 - Microchip（微芯）
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实时时钟芯片
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MCP79411T-I/ST数据手册
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若手册格式错乱，请下载阅览PDF原文件
2010-2016 Microchip Technology Inc. DS20002266H-page 5
MCP79410/MCP79411/MCP79412
TABLE 1-2: AC CHARACTERISTICS
AC CHARACTERISTICS
Electrical Characteristics:
Industrial (I): V
CC = +1.8V to 5.5V TA = -40°C to +85°C
Param.
No.
Symbol Characteristic Min. Typ. Max. Units Conditions
1F
CLK Clock Frequency — — 100 kHz 1.8V ≤ VCC <2.5V
— — 400 kHz 2.5V ≤ VCC ≤ 5.5V
2T
HIGH Clock High Time 4000 — — ns 1.8V ≤ VCC <2.5V
600 — — ns 2.5V ≤ VCC ≤ 5.5V
3TLOW Clock Low Time 4700 — — ns 1.8V ≤ VCC <2.5V
1300 — — ns 2.5V ≤ V
CC ≤ 5.5V
4TR SDA and SCL Rise Time
(Note 1)
— — 1000 ns 1.8V ≤ VCC <2.5V
——300ns2.5V≤ VCC ≤ 5.5V
5T
F SDA and SCL Fall Time
(Note 1)
— — 1000 ns 1.8V ≤ VCC <2.5V
——300ns2.5V≤ V
CC ≤ 5.5V
6THD:STA Start Condition Hold Time 4000 — — ns 1.8V ≤ VCC <2.5V
600 — — ns 2.5V ≤ V
CC ≤ 5.5V
7TSU:STA Start Condition Setup
Time
4700 — — ns 1.8V ≤ VCC <2.5V
600 — — ns 2.5V ≤ VCC ≤ 5.5V
8T
HD:DAT Data Input Hold Time 0 — — ns Note 3
9TSU:DAT Data Input Setup Time 250 — — ns 1.8V ≤ VCC <2.5V
100 — — ns 2.5V ≤ VCC ≤ 5.5V
10 T
SU:STO Stop Condition Setup
Time
4000 — — ns 1.8V ≤ VCC <2.5V
600 — — ns 2.5V ≤ VCC ≤ 5.5V
11 TAA Output Valid from Clock — — 3500 ns 1.8V ≤ VCC <2.5V
——900ns2.5V≤ V
CC ≤ 5.5V
12 TBUF Bus Free Time: Bus time
must be free before a new
transmission can start
4700 — — ns 1.8V ≤\\ VCC <2.5V
1300 — — ns 2.5V ≤ VCC ≤ 5.5V
13 TSP Input Filter Spike
Suppression
(SDA and SCL pins)
——50nsNote 1
14 T
WC Write Cycle Time
(byte or page)
——5ms
15 T
FVCC VCC Fall Time 300 — — µs Note 1
16 TRVCC VCC Rise Time 0 — — µs Note 1
17 F
OSC Oscillator Frequency — 32.768 — kHz
18 T
OSF Oscillator Timeout Period 1 — — ms Note 1
19 Endurance 1M — — cycles Page Mode, 25°C,
V
CC =5.5V (Note 2)
Note 1: Not 100% tested.
2: This parameter is not tested but ensured by characterization.
3: As a transmitter, the device must provide an internal minimum delay time to bridge the undefined region
(minimum 300 ns) of the falling edge of SCL to avoid unintended generation of Start or Stop conditions.
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