Chapter 10: Replacing Serial EEPROMs with MAX II User Flash Memory
List of Vendors and Devices
10–5
Table 10–6.
Fairchild Semiconductor Device Characteristics (Part 2 of 2)
Interface
Type
EEPROM
EEPROM
EEPROM
Device
NM24C02L
NM25C020L
NM25C040L
Size
(Bits)
2,048
2,048
4,096
SCI
—
—
—
SPI
—
v
v
2-Wire
v
—
—
3-Wire
—
—
—
I
2
C
—
—
—
Microwire
—
—
—
f
MAX
400 kHz
2.1 MHz
2.1 MHz
Operating
Voltage (V)
(1)
2.7 to 5.5
2.7 to 5.5
2.7 to 5.5
Note to
(1) The MAX II device supports two different V
CCINT
of operating voltage ranges, which are 2.375 to 2.625 V, and 3.0 to 3.6 V; the MAX IIG device
supports the 1.71 to 1.89 V operating voltage range.
Table 10–7.
Holtek Semiconductor Inc. Device Characteristics
Interface
Type
EEPROM
EEPROM
EEPROM
EEPROM
Device
HT24LC02
HT24LC04
HT24LC08
HT93LC56
Size
(Bits)
2,048
4,096
8,192
2,048
SCI
—
—
—
—
1-Wire 2-Wire 3-Wire
—
—
—
—
v
v
v
—
—
—
—
v
I
2
C
—
—
—
—
Microwire
—
—
—
—
Clock Rate
(MHz)
(V
CC
= 5.0 V)
0.4
0.4
0.4
1
Operating
Voltage
(V)
2.2 to 5.5
2.4 to 5.5
2.4 to 5.5
Read:
2.0 ~ 5.5
Write:
2.4 ~ 5.5
Read:
2.0 ~ 5.5
Write:
2.4 ~ 5.5
EEPROM
HT93LC66
4,096
—
—
—
v
—
—
1
Note to
(1) The MAX II device supports two different V
CCINT
of operating voltage ranges, which are 2.375 to 2.625 V, and 3.0 to 3.6 V; the MAX IIG device
supports the 1.71 to 1.89 V operating voltage range.
Table 10–8.
Microchip Technology Inc. Device Characteristics (Part 1 of 2)
Interface
Type
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
Device
24LCS62
24LCS52
24LC22A
24LC02B
24LC025
24LC024
24C02SC
24LCS22A
24AA52
24AA02
24AA04
24AA08
Size
(Bits)
2,048
2,048
2,048
2,048
2,048
2,048
2,048
2,048
2,048
2,048
4,096
8,192
SCI SPI
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2-Wire
—
—
—
—
—
—
—
—
—
—
—
—
3-Wire
—
—
—
—
—
—
—
—
—
—
—
—
I
2
C
v
v
v
v
v
v
v
v
v
v
v
v
Microwire
—
—
—
—
—
—
—
—
—
—
—
—
f
MAX
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
400 kHz
100 kHz
100 kHz
400 kHz
400 kHz
Operating
Voltage (V)
2.5 to 5.5
2.5 to 5.5
2.5 to 5.5
2.5 to 5.5
2.5 to 5.5
2.5 to 5.5
2.5 to 5.5
1.8 to 5.5
1.8 to 5.5
1.8 to 5.5
1.8 to 5.5
1.8 to 5.5