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DS3232MZ+TRL

Analog Devices Inc Maxim Integrated · Real Time Clocks · SO-8

DS3232MZ+TRL from Analog Devices Inc Maxim Integrated, in a SO-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	32KHZ	output	32.768kHz push-pull output with 50% duty cycle, active on VCC when EN32KHZ = 1 and on VBAT when BB32KHZ = 1, forced low when disabled, and may be left unconnected if not used.
2	VCC	power_in	Primary power supply pin that should be decoupled using a 0.1µF to 1.0µF capacitor, and connected to ground if not used.
3	INT/SQW	output	Open-drain active-low interrupt or 1Hz square-wave output that requires an external pullup to a supply of 4.5V or less and may be left open if not used.
4	RST	bidirectional	Open-drain active-low reset input/output that indicates VCC status relative to VPF and doubles as a debounced pushbutton input, with an internal 50kΩ nominal pullup to VCC, so no external pullup should be connected.
5	GND	power_in	Ground reference for the device.
6	VBAT	power_in	Backup power-supply input that should be decoupled with a 0.1µF to 1.0µF low-leakage capacitor when used as the primary source, is not required when used as backup, and should be connected to ground if not used.
7	SDA	bidirectional	Open-drain I2C serial data input/output that requires an external pullup resistor, with the pullup voltage up to 4.5V regardless of the voltage on VCC.
8	SCL	input	I2C serial clock input that synchronizes data movement on the serial interface, with the pullup voltage up to 4.5V regardless of the voltage on VCC.

Key specifications

Parameter	Value
Manufacturer	Analog Devices Inc Maxim Integrated
Package	SO-8
Category	Clock/Timing
Pins	8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
1Hz Frequency Tolerance	Df/fOUT	-5		5	ppm	Measured over 10s interval	2
1Hz Frequency Stability vs. VCC	Df/V	-1		1	ppm/V		2
Timekeeping Accuracy	tKA	-0.432		0.432	Seconds/Day		2
32kHz Frequency Tolerance	Df/fOUT	-2.5		2.5	%		2
Supply Voltage (VCC)	VCC	2.3	3.3	4.5	V		2
Supply Voltage (VBAT)	VBAT	2.3	3	4.5	V		2
Logic 0 Input	VIL	-0.3			V		2
Active Supply Current (I2C Active)	ICCA		125	250	µA	Note 3	2
Standby Supply Current (I2C Inactive)	ICCS		100	175	µA	Notes 3, 4	2
Temperature Conversion Current (I2C Inactive)	ICCSCONV		200	350	µA		3
Power-Fail Voltage	VPF	2.45	2.575	2.7	V		3
Logic 0 Output (32KHZ, INT/SQW, SDA)	VOL			0.4	V	IOL = 3mA	3
Logic 0 Output (RST)	VOL			0.4	V	IOL = 1mA	3
Logic 1 Output (32KHZ)	VOH	2			V	Active supply > 3.3V, IOH = -1mA	3
Output Leakage (32KHZ, INT/SQW, SDA)	ILO	-0.1		0.1	µA		3
Input Leakage (SCL)	ILI	-0.1		0.1	µA		3
RST I/O Leakage	IOL	-200		10	µA		3
VBAT Leakage	IBATLKG	-100	25	100	nA	TA = +25°C	3
Temperature Accuracy	TEMPACC	-3		3	°C	VCC or VBAT = +3.3V	3
Temperature Conversion Time	tCONV			10	ms		3
Active Battery Current (I2C Active)	IBATA		25	75	µA	Note 3	3
Timekeeping Battery Current (I2C Inactive)	IBATT		1.8	3	µA	EN32KHZ = 0, INTCN = 1 (Note 3)	3
Data Retention Current (Oscillator Stopped and I2C Inactive)	IBATDR			100	nA	TA = +25°C	3
Oscillator Stop Flag (OSF) Delay	tOSF		25	100	ms	Note 5	3
VCC Fall Time, VPFMAX to VPFMIN	tVCCF	300			µs		4
VCC Rise Time, VPFMIN to VPFMAX	tVCCR	0			µs		4
Recovery at Power-Up	tREC		250	300	ms	Note 6	4
SCL Clock Frequency	fSCL	0		400	kHz		4
Bus Free Time Between STOP and START Conditions	tBUF	1.3			µs		4
Hold Time (Repeated) START Condition	tHD:STA	0.6			µs		4
Low Period of SCL	tLOW	1.3			µs		4
High Period of SCL	tHIGH	0.6			µs		4
Data Hold Time	tHD:DAT	0		0.9	µs		4
Data Set-Up Time	tSU:DAT	100			ns		4
START Set-Up Time	tSU:STA	0.6			µs		4
SDA and SCL Rise Time	tR			300	ns	Note 8	4
SDA and SCL Fall Time	tF			300	ns	Note 8	4
STOP Set-Up Time	tSU:STO	0.6			µs		4
SDA, SCL Input Capacitance	CBIN			10	pF	Note 9	4
Voltage Range on Any Pin Relative to GND		-0.3		6	V		2
Operating Temperature Range	TA	-40		85	°C		2
Storage Temperature Range		-55		125	°C		2
Junction Temperature				150	°C		2
Lead Temperature (soldering)				300	°C	10s	2
Soldering Temperature (reflow)				260	°C		2

CAD (KiCad official)

Symbol: DS3232MZ+TRL
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SO-8 (KiCad packages3D, STEP)
3D model files: ds3232mz-trl-etched.step / ds3232mz-trl-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ds3232mz-trl.step / ds3232mz-trl.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Analog Devices Inc Maxim Integrated datasheet (23 pp, sha256 50daf411ed74bd83, retrieved 2026-10-18, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF