Renesas X5001PIZ-2.7

Overview

X5001PIZ-2.7 from Intersil is a CPU supervisor IC integrating power-on reset, watchdog timer, and supply voltage supervision in an 8-lead PDIP (300 mil) RoHS-compliant package. It provides 200ms power-up reset delay, 2.55V to 2.7V reset threshold, -40°C to +85°C operation, and SPI Mode 0 interface - used in industrial microcontroller systems requiring reliable brownout protection and fail-safe recovery.

For engineers reviewing the X5001PIZ-2.7 datasheet, X5001PIZ-2.7 pinout, X5001PIZ-2.7 application, or X5001PIZ-2.7 equivalent, key selection criteria include VTRIP programmability, open-drain RESET output timing, watchdog timeout configurability (0.2/0.6/1.4s or off), standby current (<1µA with WDT off), and Pb-free PDIP package compatibility with legacy through-hole assembly.

Technical Context

The X5001PIZ-2.7 implements a dual-function monitoring architecture: a precision low-VCC detector with five standard trip points (2.55–2.7V for this variant) and a nonvolatile watchdog timer controlled via SPI commands EWDC/SWDT/RWDT. Its Direct Write™ nonvolatile cell enables 100,000 write cycles and 100-year data retention for VTRIP and watchdog settings.

RESET assertion occurs at VCC = 1V during power-up and remains active for 200ms after stabilization; it also triggers on VCC drop below VTRIP or watchdog timeout. The CS/WDI pin serves dual roles - chip select and watchdog input - with high-to-low transitions restarting the timer, while VPE enables VTRIP reprogramming using 15–18V.

Key Specifications

Pinout & Package

Package: 8-lead PDIP (300 mil), RoHS-compliant Pb-free plus anneal finish per MDP0031 drawing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar CPU supervisor applications.

Compared with MAX691ACPP+ and TPS3808G33DBVR, the X5001PIZ-2.7 uniquely combines field-programmable VTRIP, nonvolatile watchdog timeout selection, and open-drain RESET in a single PDIP package - making it optimal for retrofit designs requiring both voltage supervision and fail-safe recovery without PCB redesign.

Availability

X5001PIZ-2.7 is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, energy metering, and railway signaling applications requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for X5001PIZ-2.7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Intersil Corporation (now part of Renesas Electronics) is a semiconductor manufacturer specializing in precision analog, power management, and interface ICs for industrial, aerospace, and communications markets.

The X5001 product line was designed as a highly integrated CPU supervisor targeting cost-sensitive, space-constrained embedded systems needing robust power-on reset, brownout protection, and watchdog functionality in a single 8-pin package.

FAQ

What is the operating temperature range for the X5001PIZ-2.7?

The X5001PIZ-2.7 is rated for -40°C to +85°C operation, qualifying it for industrial and transportation applications where ambient conditions exceed commercial-grade limits. This rating applies specifically to the PIZ suffix variant, as confirmed in the FN8125 datasheet ordering table. The device maintains full functionality-including VTRIP accuracy, watchdog timing, and RESET assertion-across this full range.

Does the X5001PIZ-2.7 support programmable reset threshold voltage?

Yes, the X5001PIZ-2.7 supports nonvolatile VTRIP programming via its SPI interface and dedicated VPE pin. Applying 15–18V to VPE unlocks the ability to adjust the reset threshold within 1.7V to 5.0V using documented command sequences. This feature is intrinsic to the X5001PIZ-2.7 silicon and does not require external components beyond the programming voltage source.

What are the watchdog timeout options available on the X5001PIZ-2.7?

The X5001PIZ-2.7 offers four selectable watchdog timeout periods: 0.2 seconds, 0.6 seconds, 1.4 seconds, or disabled - configured via nonvolatile WD0/WD1 bits. These settings persist across power cycles and are changed using the EWDC and SWDT SPI instructions. The timeout values are specified in the datasheet's Table 1 and Figure 15 timing diagrams.

Is the X5001PIZ-2.7 RoHS compliant?

Yes, the X5001PIZ-2.7 is RoHS compliant per the "Pb-free plus anneal" construction noted in the datasheet. It uses 100% matte tin termination and RoHS-compliant molding compounds, meeting IPC/JEDEC J-STD-020 reflow requirements for both SnPb and Pb-free processes. The "Z" suffix explicitly denotes this compliance.

What package type does the X5001PIZ-2.7 use?

The X5001PIZ-2.7 uses an 8-lead plastic dual-in-line package (PDIP) with 300 mil body width, per package drawing MDP0031. This through-hole package supports legacy board assembly and provides mechanical robustness for high-vibration environments. Pin 1 is marked with a notch or dot, and the package is lead-free with anneal processing.