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参数资料
| 型号： | X4045M8IZ |
| 厂商： | Intersil |
| 文件页数： | 5/24页 |
| 文件大小： | 0K |
| 描述： | IC CPU SUPERV 4K EEPROM 8-MSOP |
| 产品培训模块： | Solutions for Industrial Control Applications |
| 标准包装： | 80 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 高有效 |
| 复位超时： | 最小为 100 ms |
| 电压 - 阀值： | 4.38V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 管件 |
X4043, X4045
PRINCIPLES OF OPERATION
Power-on Reset
Application of power to the X4043/45 activates a
Power-on Reset Circuit that pulls the RESET/RESET
pin active. This signal provides several benefits.
nonvolatile control bits in the status register determine
the watchdog timer period. The microprocessor can
change these watchdog bits, or they may be “locked”
by tying the WP pin HIGH.
Figure 1. Watchdog Restart
– It prevents the system microprocessor from starting
to operate with insufficient voltage.
– It prevents the processor from operating prior to sta-
bilization of the oscillator.
– It allows time for an FPGA to download its configura-
SCL
SDA
.6μs
1.3μs
tion prior to initialization of the circuit.
Start
WDT Reset
Stop
When V CC exceeds the device V TRIP threshold value
for 200ms (nominal) the circuit releases
RESET/RESET allowing the system to begin operation.
Low Voltage Monitoring
During operation, the X4043/45 monitors the V CC level
and asserts RESET/RESET if supply voltage falls
below a preset minimum V TRIP . The RESET/RESET
signal prevents the microprocessor from operating in a
power fail or brownout condition. The RESET/RESET
signal remains active until the voltage drops below 1V.
It also remains active until V CC returns and exceeds
EEPROM Inadvertent Write Protection
When RESET/RESET goes active as a result of a low
voltage condition (V CC < V TRIP ), any in-progress com-
munications are terminated. While V CC < V TRIP , no new
communications are allowed and no nonvolatile write
operation can start. Nonvolatile writes in-progress when
RESET/RESET goes active are allowed to finish.
Additional protection mechanisms are provided with
memory block lock and the Write Protect (WP) pin.
These are discussed elsewhere in this document.
V TRIP for 200ms.
V TRIP Programming
Watchdog Timer
The Watchdog Timer circuit monitors the microproces-
sor activity by monitoring the SDA and SCL pins. A
standard read or write sequence to any slave address
byte restarts the watchdog timer and prevents the
(RESET/RESET) signal going active. A minimum
sequence to reset the watchdog timer requires four
microprocessor intructions namely, a Start, Clock Low,
The X4043/45 is shipped with a standard V CC thresh-
old (V TRIP ) voltage. This value will not change over
normal operating and storage conditions. However, in
applications where the standard V TRIP is not exactly
right, or if higher precision is needed in the V TRIP
value, the X4043/45 threshold may be adjusted. The
procedure is described below, and uses the applica-
tion of a high voltage control signal.
Clock High and Stop. (See Page 18) The state of two
Figure 2. Set V TRIP Level Sequence (V CC = desired V TRIP values WEL bit set)
WP
V P = 15-18V
SCL
SDA
0 1 2 3 4 5 6 7
A0h
5
0 1 2 3 4 5 6 7
01h
0 1 2 3 4 5 6 7
00h
FN8118.2
March 16, 2006
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PDF描述 |
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| X4043M8IZ-2.7 | IC CPU SUPERV 4K EEPROM 8-MSOP |
| VI-B4R-EV-F2 | CONVERTER MOD DC/DC 7.5V 150W |
| X4043M8IZ | IC CPU SUPERV 4K EEPROM 8-MSOP |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| X4045M8IZ-2.7 | 功能描述:IC CPU SUPERV 4K EEPROM 8-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 600 ms 电压 - 阀值:3.8V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) |
| X4045M8IZ-2.7A | 功能描述:IC CPU SUPERV 4K EEPROM 8-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 600 ms 电压 - 阀值:3.8V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) |
| X4045M8IZ-4.5A | 功能描述:IC CPU SUPERV 4K EEPROM 8-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 600 ms 电压 - 阀值:3.8V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) |
| X4045M8Z | 功能描述:IC CPU SUPERV 4K EEPROM 8-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 600 ms 电压 - 阀值:3.8V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) |
| X4045M8Z-2.7 | 功能描述:IC CPU SUPERV 4K EEPROM 8-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 600 ms 电压 - 阀值:3.8V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) |
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