Microcontrollers (MCUs) for Battery Operated Embedded Devices

Design without compromise using low power EFM32™ ARM^® Cortex^®-M based 32-bit MCUs and EFM8™ 8051-based 8-bit MCUs. Integrate peripherals, include rich displays and perform complex computations while meeting the power budget of your system by using energy-friendly MCUs from Silicon Labs.

EFM32 32-bit MCUs for Battery Operated Embedded Devices

Silicon Labs' EFM32 32-bit microcontroller (MCU) family is the world's most energy-friendly microcontroller and is especially suited for use in low-power and energy-sensitive applications, including energy, water, and gas metering, building automation, alarm and security and portable medical/fitness equipment. Since battery replacement is often not possible for reasons of access and cost, such applications need to operate for as long as possible without external power or operator intervention.

	Giant Gecko GG11	Pearl Gecko PG12	Pearl Gecko PG1	Happy Gecko	Zero Gecko	Tiny Gecko	Gecko	Jade Gecko	Leopard Gecko	Giant Gecko	Wonder Gecko
EM4 Shutoff Mode	100 nA	60 nA	40 nA	20 nA	20 nA	20 nA	20 nA	20 nA	20 nA	20 nA	20 nA
EM3 Stop Mode	2.2 uA	1.81 uA	2.1 uA	0.6 uA	0.5 uA	0.6 uA	0.6 uA	2.1 uA	0.65 uA	0.8 uA	0.65 uA
EM2 Deep Sleep Mode	1.6 uA	1.5 uA	2.2 uA	0.9 uA	0.9 uA	1.0 uA	0.9 uA	2.5 uA	0.95 uA	1.1 uA	0.95 uA
EM1 Sleep Mode	40 uA/MHz	33 uA/MHz	32 uA/MHz	55 uA/MHz	48 uA/MHz	51 uA/MHz	45 uA/MHz	32 uA/MHz	63 uA/MHz	80 uA/MHz	63 uA/MHz
EM0 Run Mode	77 uA/MHz	64 uA/MHz	63 uA/MHz	132 uA/MHz	114 uA/MHz	150 uA/MHz	180 uA/MHz	62 uA/MHz	211 uA/MHz	219 uA/MHz	225 uA/MHz
Core	ARM Cortex-M4	ARM-Cortex-M4	ARM Cortex-M4	ARM Cortex-M0+	ARM Cortex-M0+	ARM Cortex-M3	ARM Cortex-M3	ARM Cortex-M3	ARM Cortex-M3	ARM Cortex-M3	ARM Cortex-M4
Flash (kB)	2048	1024	128-256	32 - 64	4 - 32	4 - 32	16 - 128	128 - 256	64 - 256	512 - 1024	64 - 256
AES	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
LCD	Yes	No	No	No	No	Yes	Yes	No	Yes	Yes	Yes
EBI	Yes	No	No	No	No	No	Yes	No	Yes	Yes	Yes
TFT	Yes	No	No	No	No	No	Yes	No	Yes	Yes	Yes
USB	Yes	No	No	Yes	No	No	No	No	Yes	Yes	Yes
FPU	Yes	Yes	Yes	No	No	No	No	Yes	No	No	Yes
Available Packages	QFN64 QFP64 QFP100 BGA112 BGA120 BGA152 BGA192	QFN48 BGA125	QFN32 QFN48	QFN24 QFN32 CSP36 QFP48	QFN24 QFN32 QFP48	QFN24 QFN32 QFP48 BGA48 QFN64 QFP64	QFN32 QFP48 QFN64 QFP64 QFP100 BGA112	QFN32 QFN48	QFN64 QFP64 QFP100 BGA112 BGA120 WLCSP81	QFN64 QFP64 QFP100 BGA112 BGA120	QFN64 QFP64, QFP100 BGA112 BGA120 WLCSP81
Development Kit	SLSTK3701A	SLSTK3402A	SLSTK3401A	SLSTK3400A	EFM32ZG-STK3200	EFM32TG-STK3300	EFM32-G8XX-STK	SLSTK3401A	EFM32LG-STK3600	EFM32GG-STK3700	EFM32WG-STK3800
Buy or Sample	Giant Gecko GG11	Pearl Gecko PG12	Pearl Gecko PG1	Happy Gecko	Zero Gecko	Tiny Gecko	Gecko	Jade Gecko	Leopard Gecko	Giant Gecko	Wonder Gecko

EM4 Shutoff Mode

100 nA

60 nA

40 nA

20 nA

EM3 Stop Mode

2.2 uA

1.81 uA

2.1 uA

0.6 uA

0.5 uA

0.6 uA

2.1 uA

0.65 uA

0.8 uA

0.65 uA

EM2 Deep Sleep Mode

1.6 uA

1.5 uA

2.2 uA

0.9 uA

1.0 uA

0.9 uA

2.5 uA

0.95 uA

1.1 uA

0.95 uA

EM1 Sleep Mode

40 uA/MHz

33 uA/MHz

32 uA/MHz

55 uA/MHz

48 uA/MHz

51 uA/MHz

45 uA/MHz

32 uA/MHz

63 uA/MHz

80 uA/MHz

63 uA/MHz

EM0 Run Mode

77 uA/MHz

64 uA/MHz

63 uA/MHz

132 uA/MHz

114 uA/MHz

150 uA/MHz

180 uA/MHz

62 uA/MHz

211 uA/MHz

219 uA/MHz

225 uA/MHz

Core

ARM Cortex-M4

ARM-Cortex-M4

ARM Cortex-M4

ARM Cortex-M0+

ARM Cortex-M3

ARM Cortex-M4

Flash (kB)

2048

1024

128-256

32 - 64

4 - 32

16 - 128

128 - 256

64 - 256

512 - 1024

64 - 256

AES

Yes

LCD

Yes

EBI

Yes

TFT

Yes

USB

Yes

FPU

Yes

Available Packages

QFN64
QFP64
QFP100
BGA112
BGA120
BGA152
BGA192

QFN48
BGA125

QFN32
QFN48

QFN24
QFN32
CSP36
QFP48

QFN24
QFN32
QFP48

QFN24
QFN32
QFP48
BGA48
QFN64
QFP64

QFN32
QFP48
QFN64
QFP64
QFP100
BGA112

QFN32
QFN48

QFN64
QFP64
QFP100
BGA112
BGA120
WLCSP81

QFN64
QFP64
QFP100
BGA112
BGA120

QFN64
QFP64,
QFP100
BGA112
BGA120
WLCSP81

Development Kit

Buy or Sample

EFM8 8-bit MCUs for Battery Operated Embedded Devices

Silicon Labs designed the EFM8 8-bit microcontroller (MCU) family from the ground up to be the most power-efficient MCUs in the industry. The combination of the low active mode current consumption when the application is running and the industry’s lowest current consumption in sleep modes saves power in real world embedded system. This combination of features makes these devices ideal for many battery-powered applications.

	Sleepy Bee	Universal Bee	Busy Bee	Laser Bee
Shutdown	50 nA (sleep w/o RTC)	200 nA	200 nA	200 nA
Sleep w/RTC	300 nA	N/A	N/A	N/A
Snooze	N/A	20 uA	20 uA	19 uA
Suspend	77 uA	120 uA	120 uA	120 uA
Idle Mode	67 uA/MHz	114 uA/MHz	84 uA/MHz	128 uA/MHz
Normal Mode	88 uA/MHz	175 uA/MHz	182 uA/MHz	171 uA/MHz
Flash Range (kB)	2 - 64	8 - 64	2 - 64	16 - 64
UART	1	2	2	2
SPI	2	1	1	1
I²C/SMBus	1	2	2	2
ADC	1	1	1	1
Timer	4 (plus RTC)	6	6	6
USB		Yes
Available Packages	QFN20 QFN24 QFN32 QFP32 QSOP24 CSP16	QFN20 QFN24 QFN32 QFP48 QSOP24	SOIC16 QFN20 QSOP24 QFN32 QFN24 QFP32	QFN24 QFN32 QFP32 QSOP24
Development Kit	View Kits	View Kits	View Kits	View Kits
Buy or Sample	Sleepy Bee	Universal Bee	Busy Bee	Laser Bee

Shutdown

50 nA (sleep w/o RTC)

200 nA

Sleep w/RTC

300 nA

N/A

Snooze

N/A