diff --git a/Makefile b/Makefile
index dd9cafc..c052910 100644
--- a/Makefile
+++ b/Makefile
@@ -11,6 +11,7 @@ smoke-test:
 	@mkdir -p build
 	tinygo build -size short -o ./build/test.elf -target=itsybitsy-m0 ./examples/adxl345/main.go
 	tinygo build -size short -o ./build/test.elf -target=itsybitsy-m0 ./examples/apa102/main.go
+	tinygo build -size short -o ./build/test.elf -target=microbit ./examples/at24cx/main.go
 	tinygo build -size short -o ./build/test.elf -target=itsybitsy-m0 ./examples/bh1750/main.go
 	tinygo build -size short -o ./build/test.elf -target=itsybitsy-m0 ./examples/blinkm/main.go
 	tinygo build -size short -o ./build/test.elf -target=itsybitsy-m0 ./examples/bmp180/main.go
diff --git a/README.md b/README.md
index 7624842..712fa59 100644
--- a/README.md
+++ b/README.md
@@ -56,6 +56,7 @@ func main() {
 |----------|-------------|
 | [ADXL345 accelerometer](http://www.analog.com/media/en/technical-documentation/data-sheets/ADXL345.pdf) | I2C |
 | [APA102 RGB LED](https://cdn-shop.adafruit.com/product-files/2343/APA102C.pdf) | SPI |
+| [AT24CX 2-wire serial EEPROM](https://www.openimpulse.com/blog/wp-content/uploads/wpsc/downloadables/24C32-Datasheet.pdf) | I2C |
 | [BH1750 ambient light sensor](https://www.mouser.com/ds/2/348/bh1750fvi-e-186247.pdf) | I2C |
 | [BlinkM RGB LED](http://thingm.com/fileadmin/thingm/downloads/BlinkM_datasheet.pdf) | I2C |
 | [BMP180 barometer](https://cdn-shop.adafruit.com/datasheets/BST-BMP180-DS000-09.pdf) | I2C |
diff --git a/at24cx/at24cx.go b/at24cx/at24cx.go
new file mode 100644
index 0000000..bef58a6
--- /dev/null
+++ b/at24cx/at24cx.go
@@ -0,0 +1,171 @@
+// Package at24cx provides a driver for the AT24C32/64/128/256/512 2-wire serial EEPROM
+//
+// Datasheet:
+// https://www.openimpulse.com/blog/wp-content/uploads/wpsc/downloadables/24C32-Datasheet.pdf
+package at24cx // import "tinygo.org/x/drivers/at24cx"
+
+import (
+	"errors"
+	"machine"
+	"time"
+)
+
+// Device wraps an I2C connection to a DS3231 device.
+type Device struct {
+	bus               machine.I2C
+	Address           uint16
+	pageSize          uint16
+	currentRAMAddress uint16
+	startRAMAddress   uint16
+	endRAMAddress     uint16
+}
+
+type Config struct {
+	PageSize        uint16
+	StartRAMAddress uint16
+	EndRAMAddress   uint16
+}
+
+// New creates a new AT24C32/64 connection. The I2C bus must already be
+// configured.
+//
+// This function only creates the Device object, it does not touch the device.
+func New(bus machine.I2C) Device {
+	return Device{
+		bus:     bus,
+		Address: Address,
+	}
+}
+
+// Configure sets up the device for communication
+func (d *Device) Configure(cfg Config) {
+	if cfg.PageSize == 0 {
+		d.pageSize = 32
+	} else {
+		d.pageSize = cfg.PageSize
+	}
+	if cfg.EndRAMAddress == 0 {
+		d.endRAMAddress = 4096
+	} else {
+		d.endRAMAddress = cfg.EndRAMAddress
+	}
+	d.startRAMAddress = cfg.StartRAMAddress
+}
+
+// WriteByte writes a byte at the specified address
+func (d *Device) WriteByte(eepromAddress uint16, value uint8) error {
+	address := []uint8{
+		uint8((eepromAddress >> 8) & 0xFF),
+		uint8(eepromAddress & 0xFF),
+		value,
+	}
+	return d.bus.Tx(d.Address, address, nil)
+}
+
+// ReadByte reads the byte at the specified address
+func (d *Device) ReadByte(eepromAddress uint16) (uint8, error) {
+	address := []uint8{
+		uint8(eepromAddress >> 8),
+		uint8(eepromAddress & 0xFF),
+	}
+	data := make([]uint8, 1)
+	err := d.bus.Tx(d.Address, address, data)
+	return data[0], err
+}
+
+// WriteAt writes a byte array at the specified address
+func (d *Device) WriteAt(data []byte, offset int64) (n int, err error) {
+	return d.writeAt(data, uint16(offset))
+}
+
+// writeAt writes a byte array at the specified address
+func (d *Device) writeAt(data []byte, offset uint16) (n int, err error) {
+	values := make([]uint8, 32)
+	dataLeft := uint16(len(data))
+	d.currentRAMAddress = offset
+	offset = 0
+	var offsetPage uint16
+	var chunkLength uint16
+	for dataLeft > 0 {
+		offsetPage = d.currentRAMAddress % d.pageSize
+		if dataLeft < 30 { // The 32K/64K EEPROM is capable of 32-byte page writes and we're using 2 for the address
+			chunkLength = dataLeft
+		} else {
+			chunkLength = 30
+		}
+		if (d.pageSize - offsetPage) < chunkLength {
+			chunkLength = d.pageSize - offsetPage
+		}
+		for i := uint16(0); i < chunkLength; i++ {
+			values[2+i] = data[offset+i]
+		}
+		values[0] = uint8(d.currentRAMAddress >> 8)
+		values[1] = uint8(d.currentRAMAddress & 0xFF)
+		err := d.bus.Tx(d.Address, values[:chunkLength+2], nil)
+		if err != nil {
+			return 0, err
+		}
+		dataLeft -= chunkLength
+		offset += chunkLength
+		if d.endRAMAddress-chunkLength < d.currentRAMAddress {
+			d.currentRAMAddress = d.startRAMAddress + (d.currentRAMAddress+uint16(len(data)))%d.endRAMAddress
+		} else {
+			d.currentRAMAddress += chunkLength
+		}
+		time.Sleep(2 * time.Millisecond) // writing again too soon will block the device
+	}
+	return len(data), nil
+}
+
+// ReadAt reads the bytes at the specified address
+func (d *Device) ReadAt(data []byte, offset int64) (n int, err error) {
+	return d.readAt(data, uint16(offset))
+}
+
+// readAt reads the bytes at the specified address
+func (d *Device) readAt(data []byte, offset uint16) (n int, err error) {
+	address := []uint8{
+		uint8((offset >> 8) & 0xFF),
+		uint8(offset & 0xFF),
+	}
+	err = d.bus.Tx(d.Address, address, data)
+
+	if d.endRAMAddress-uint16(len(data)) < offset {
+		d.currentRAMAddress = d.startRAMAddress + (offset+uint16(len(data)))%d.endRAMAddress
+	} else {
+		d.currentRAMAddress = offset + uint16(len(data))
+	}
+	return len(data), err
+}
+
+// Seek sets the offset for the next Read or Write on SRAM to offset, interpreted
+// according to whence: 0 means relative to the origin of the SRAM, 1 means
+// relative to the current offset, and 2 means relative to the end.
+// returns new offset and error, if any
+func (d *Device) Seek(offset int64, whence int) (int64, error) {
+	w := uint16(0)
+	switch whence {
+	case 0:
+		w = d.startRAMAddress
+	case 1:
+		w = d.currentRAMAddress
+	case 2:
+		w = d.endRAMAddress
+	default:
+		return 0, errors.New("invalid whence")
+	}
+	d.currentRAMAddress = w + uint16(offset)
+	return int64(d.currentRAMAddress), nil
+}
+
+// Write writes len(data) bytes to SRAM
+// returns number of bytes written and error, if any
+func (d *Device) Write(data []byte) (n int, err error) {
+	return d.writeAt(data, d.currentRAMAddress)
+}
+
+// Read reads len(data) from SRAM
+// returns number of bytes written and error, if any
+func (d *Device) Read(data []uint8) (n int, err error) {
+	return d.readAt(data, d.currentRAMAddress)
+}
diff --git a/at24cx/registers.go b/at24cx/registers.go
new file mode 100644
index 0000000..f001fc4
--- /dev/null
+++ b/at24cx/registers.go
@@ -0,0 +1,4 @@
+package at24cx
+
+// The I2C address which this device listens to.
+const Address = 0x57
diff --git a/examples/at24cx/main.go b/examples/at24cx/main.go
new file mode 100644
index 0000000..d23f5d1
--- /dev/null
+++ b/examples/at24cx/main.go
@@ -0,0 +1,122 @@
+package main
+
+import (
+	"machine"
+	"time"
+
+	"tinygo.org/x/drivers/at24cx"
+)
+
+func main() {
+	machine.I2C0.Configure(machine.I2CConfig{})
+
+	eeprom := at24cx.New(machine.I2C0)
+	eeprom.Configure(at24cx.Config{})
+
+	values := make([]uint8, 100)
+	for i := uint16(0); i < 100; i++ {
+		values[i] = uint8(65 + i%26)
+	}
+	_, err := eeprom.WriteAt(values, 0)
+	if err != nil {
+		println("There was an error in WriteAt:", err)
+		return
+	}
+
+	for i := uint16(0); i < 26; i++ {
+		err = eeprom.WriteByte(100+i, uint8(90-i))
+		if err != nil {
+			println("There was an error in WriteByte:", i, err)
+			return
+		}
+		time.Sleep(2 * time.Millisecond)
+	}
+
+	println("\n\r\n\rRead 26 bytes one by one from address 0")
+	println("Expected: ABCDEFGHIJKLMNOPQRSTUVWXYZ")
+	print("Real: ")
+	for i := uint16(0); i < 26; i++ {
+		char, err := eeprom.ReadByte(i)
+		print(string(char))
+		if err != nil {
+			println("There was an error in ReadByte:", i, err)
+			return
+		}
+	}
+	println("")
+
+	println("\n\r\n\rRead 100 bytes from address 26")
+	println("Expected: ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVZYXWVUTSRQPONMLKJIHGFEDCBA")
+	print("Real: ")
+	data := make([]byte, 100)
+	_, err = eeprom.ReadAt(data, 26)
+	if err != nil {
+		println("There was an error in ReadAt:", err)
+		return
+	}
+	for i := 0; i < 100; i++ {
+		print(string(data[i]))
+	}
+	println("")
+
+	// Move to the beginning of memory
+	eeprom.Seek(0, 0)
+	_, err = eeprom.Write([]uint8{88, 88, 88})
+	if err != nil {
+		println("There was an error in Write:", err)
+		return
+	}
+
+	println("\n\r\n\rRead 3 bytes")
+	println("Expected: DEF")
+	print("Real: ")
+	data = make([]byte, 3)
+	_, err = eeprom.Read(data)
+	if err != nil {
+		println("There was an error in Read:", err)
+		return
+	}
+	for _, char := range data {
+		print(string(char))
+	}
+	println("")
+
+	println("\n\r\n\rRead another 3 bytes (from the beginning this time)")
+	eeprom.Seek(-6, 1)
+	println("Expected: XXX")
+	print("Real: ")
+	data = make([]byte, 3)
+	_, err = eeprom.Read(data)
+	if err != nil {
+		println("There was an error in Read:", err)
+		return
+	}
+	for _, char := range data {
+		print(string(char))
+	}
+	println("")
+
+	// Move to the end of memory
+	eeprom.Seek(-4, 2)
+	_, err = eeprom.Write([]uint8{89, 90, 89, 90})
+	if err != nil {
+		println("There was an error in Write:", err)
+		return
+	}
+
+	println("\n\r\n\rRead the last 4 bytes of the memory and the 3 of the beginning")
+	eeprom.Seek(-4, 1)
+	println("Expected: YZYZXXX")
+	print("Real: ")
+	data = make([]byte, 7)
+	_, err = eeprom.Read(data)
+	if err != nil {
+		println("There was an error in Read:", err)
+		return
+	}
+	for _, char := range data {
+		print(string(char))
+	}
+	println("")
+
+}