24C02/24C04/24C08/24C16/24C32/24C64
2K
4K
8K
，
16K
，
32K位和64K位串行I2 C总线EEPROM
1.
24C02/04/08/16/32/64
PROM
256/512/1024/2048/4096/8192×8-bit
1.8V
1mA 24C02/04/08/16/32/64
8/16/16/16/32/32
24C02/04/08/16/32/64
8-pin SOP
2.
●
●
●
1μA
8-pin PDIP
1.8V~5.5V
- 1mA
- 1μA
- 24C02, 256 X 8 (2K bits)
- 24C04, 512 X 8 (4K bits)
- 24C08, 1024 X 8 (8K bits)
- 24C16, 2048 X 8 (16K bits)
- 24C32, 4096 X 8 (32K bits)
- 24C64, 8192 X 8 (64K bits)
● 2
I 2C
2
● IC
1 MHz (5V), 400 kHz (1.8V, 2.5V, 2.7V)
●
●
(
5 ms)
●
●
●
8
(24C02) 16
(24C04/08/16),32字节页(24C32/64)
●
●
● ESD
2.5kV
●
100
100
00
● 8-pin DIP 8-pin
n SOP
RoHS
●
3.
●
●
●
●
●
●
4.
封装
工作温度范围
-4 0 ℃~ + 8 5 ℃
SOP8L
D IP 8 L
SOP8L
D I8 L
SOP8L
D I8 L
SOP8L
D IP 8 L
SOP8L
D IP 8 L
SOP8L
D IP 8 L
订购型号
无铅
24C02D
24C02P
24C04D
24C04P
24C08D
24C08P
24C16D
24C16P
24C32D
24C32P
2 4 C64 D
2 4 C64 P
Jan. 2008
Rev 1.0
1
标准包装数
1 0 0 片/ 管
5 0 片/ 管
1 0 0 片/ 管
5 0 片/ 管
1 0 0 片/ 管
5 0 片/ 管
1 0 0 片/ 管
5 0 片/ 管
1 0 0 片/ 管
5 0 片/ 管
1 0 0 片/ 管
5 0 片/ 管
A0
1
8
VCC
A1
2
7
WP
A2
3
6
SCL
GND
4
5
SDA
NC
1
8
VCC
A1
1
2
7
WP
A2
A
3
6
SCL
GND
4
5
SDA
S
DA
NC
1
8
VCC
NC
C
2
7
WP
A2
A
3
6
SCL
GND
4
5
SDA
NC
1
8
VCC
NC
2
7
WP
NC
3
6
SCL
GND
4
5
SDA
A0
1
8
VCC
A1
2
7
WP
A2
3
6
SCL
GND
4
5
SDA
A0
1
8
VCC
A1
2
7
WP
A2
3
6
SCL
GND
4
5
SDA
(
C02
C04
C08
C16
C32
C64
)
thinks for author
5. Ḛ೒
WP
VCC
SCL
GND
START STOP
LOGIC
SDA
EN
SERIAL CONTROL
LOGIC
HIGH VOLTAGE
PUMP/TIMING
LOAD
COMP
DATA RECOVERY
DEVICE ADDRESS
COMPARATOR
C16 / C08 / C04 / C02
INC
NC / NC / A1 / A1
DATA WORD
ADDRESS COUNTER
NC / A2 / A2 / A2
X DECODER
LOAD
NC / NC / NC / A0
EEPROM
Y DECODER
SERIAL MUX
DIN
DOUT/ACKNOWLEDGE
DOUT
೒1Ḛ೒
6. ᳔໻乱ᅮখ᭄
໻乱ᅮখ᭄
(䍙ߎ᳔໻乱ᅮখ᭄ৃ㛑Ӯᇐ㟈఼ӊᤳണ)
᳔໻乱ᅮখ᭄ৃ㛑Ӯᇐ㟈఼ӊᤳണ
খ
খ᭄
ヺো
ؐ
Ⳉ⌕կ⬉⬉य़
VCC
-0.3 ~ +6.5
V
Ⳉ⌕䕧ܹ⬉य़
䕧ܹ⬉य़
VIN
-0.3 ~ VCC +0.3
V
Ⳉ⌕䕧ߎ⬉य़
ߎ⬉य़
VOUT
-0.3 ~ VCC +0.3
V
ᄬ‫⏽ټ‬ᑺ
TSTG
-65 ~ +150
°C
2500
V
200
V
ESD⬉य़ (Ҏԧ῵ൟ)
VESD
ESD⬉य़ (ᴎ఼῵ൟ)
ऩԡ
7. ᥼㤤Ꮉ԰ᴵӊ
(ᑨ೼᥼㤤Ꮉ԰ᴵӊϟᅲ⦄ࡳ㛑)
খ᭄
ヺো
᳔ᇣؐ
᳔໻ؐ
ऩԡ
Ⳉ⌕կ⬉⬉य़
VCC
1.8
5.5
V
Ꮉ԰⏽ᑺ
TA
-40
+85
°C
Jan. 2008
Rev 1.0
2
24C02/24C04/24C08/24C16/24C32/24C64
8. ᓩ㛮⬉ᆍ
(ᴵӊ˖TA = 25°C, f = 1.0 MHz, VCC = +1.8V)
খ᭄
᳔ᇣؐ ᳔໻ؐ
ヺো
⌟䆩ᴵӊ
ऩԡ
䕧ܹ/䕧ߎ⬉ᆍ(SDA)
CI/O
VI/O = 0V
8
pF
䕧ܹ⬉ᆍ(A0, A1, A2, SCL)
CIN
VIN = 0V
6
pF
9. Ⳉ⌕⬉⇨⡍ᗻ
(ᴵӊ˖TA = 0°C ̚ +70°C, VCC = +1.8V ̚ +5.5Vˈ䰸䴲঺᳝⊼䞞)
খ᭄
⌟䆩ᴵӊ
ヺো
ؐ ‫݌‬ൟؐ ᳔໻ؐ ऩԡ
᳔ᇣؐ
100kHz 䇏
0
4
0.4
1.0
mA
m
100kHz ‫ݭ‬
2.0
3.0
mA
VIN = VCC ៪ GND
1.0
μA
ILI
VIN = VCC ៪ GND
3.0
μA
䕧ߎⓣ⬉⌕
ILO
VOUT = VCC ៪ GND
3.0
μA
䕧ܹԢ⬉ᑇ⬉य़
VIL
-0.6
VCC×0.3
V
䕧ܹ催⬉ᑇ⬉य़
VIH
VCC×0.7
VCC+0.5
V
կ⬉⬉⌕
ICC
VCC =5V
ᕙᴎ⬉⌕
ISB
䕧ܹⓣ⬉⌕
䕧ߎԢ⬉ᑇ⬉य़
0.05
VOL3
VCCC =5.0V, IOL = 3.0 mA
0.4
V
VOL2
VCC =3.0V, IOL = 2.1 mA
0.4
V
VOL1
VCC =1.8V, IOL = 0.15 mA
0.2
V
10. Ѹ⌕⬉⇨⡍ᗻ
ᗻ
(ᴵӊ˖TA = 0°C
C ̚ +70°C, VCC = +1.8V ̚ +5.5
+5.5V, CL = 100 pFˈ䰸䴲঺᳝⊼䞞)
খ᭄
ヺো
ᯊ䩳乥⥛, SCL
fSCL
ᯊ䩳Ԣ⬉ᑇᆑᑺ
tLOW
ᯊ䩳催⬉ᑇᆑᑺ
tHIGH
ాໄ⍜䰸ᯊ䯈
tI
ᯊ䩳ϟ䰡⊓ࠄ᭄᥂
᳝ᬜ䕧ߎ䯈䱨ᯊ䯈
tAA
ᘏ㒓䞞ᬒᯊ䯈
tBUF
⌟䆩ᴵӊ
᳔ᇣؐ ‫݌‬ൟؐ ᳔໻ؐ ऩԡ
VCC =1.8V
400
VCC =5V
1000
VCC =1.8V
1.2
VCC =5V
0.6
VCC =1.8V
0.6
VCC =5V
0.4
μs
μs
VCC =1.8V
50
VCC =5V
40
VCC =1.8V
0.05
0.9
VCC =5V
0.05
0.55
VCC =1.8V
1.2
VCC =5V
0.5
Jan. 2008
Rev 1.0
3
kHz
ns
μs
μs
24C02/24C04/24C08/24C16/24C32/24C64
10. Ѹ⌕⬉⇨⡍ᗻ(㓁)
খ᭄
ヺো
⌟䆩ᴵӊ
᳔ᇣؐ ‫݌‬ൟؐ ᳔໻ؐ ऩԡ
VCC =1.8V
0.6
VCC =5V
0.25
VCC =1.8V
0.6
VCC =5V
0.25
䍋ྟᴵӊֱᣕᯊ䯈
tHD.STA
䍋ྟᴵӊᓎゟᯊ䯈
tSU.STA
᭄᥂䕧ֱܹᣕᯊ䯈
tHD.DAT
0
μ
μs
᭄᥂䕧ܹᓎゟᯊ䯈
tSU.DAT
100
0
ns
䕧ܹϞछᯊ䯈
tR
䕧ܹϟ䰡ᯊ䯈
tF
᭄᥂䕧ߎֱᣕᯊ䯈
tDH
‫਼ݭ‬ᳳ
tWR
VCC =1.8V
3
300
VCC =5V
100
100
VCC =1.8V
8V
0.6
VCC =5V
0.25
ns
n
ns
μs
50
ns
5
tHIG
HIGH
tF
μs
300
tSU.STO
‫ذ‬ℶᴵӊᓎゟᯊ䯈
μs
ms
tR
tLOW
tLOW
SCL
tSU.STA
tHD.STA
tHD.DAT
tSU.DAT
tSU.STO
SDA_IN
tAA
A
tDH
tBUF
SDA_OUT
೒2ᘏ㒓ᯊᑣ
SCL
SDA
8th BIT
ACK
tWR(1)
STOP
CONDITION
START
CONDITION
⊼‫਼ݭ‬ᳳᯊ䯈W:5ᰃᣛҢϔϾ‫ݭ‬ᑣ߫ⱘ᳝ᬜ‫ذ‬ℶᴵӊᓔྟ㟇‫ݙ‬䚼‫਼ݭ‬ᳳ㒧ᴳⱘᯊ䯈DŽ
೒3 ‫਼ݭ‬ᳳᯊᑣ
Jan. 2008
Rev 1.0
4
24C02/24C04/24C08/24C16/24C32/24C64
11.
1
2
3
A2
A0
A1
A2
A1 A0
24C02/32/64
24C02/32/64
24C04
24C04
A2 A1
A0
8
A2 A1
A0
4
24C08
A2
A0 A1
24C16
A0
5
SDA
6
SCL
7
WP
4
GND
8
VCC
/
VCC
2
24C08
16K
A2
SDA
10kΩ
SCL
WP
WP
VCC
WP
12.
器件
总容量（位）
总页数
字节/ 页
24C02
24C04
24C08
24C16
24C32
24C64
2K
4K
8K
16K
32K
64K
32
32
64
128
128
256
8
16
16
16
32
32
Jan. 2008
Rev 1.0
5
字地址长度
8位
9位
10位
11位
12位
13位
A1
24C02/24C04/24C08/24C16/24C32/24C64
13. 䆺㒚᪡԰䇈ᯢ
24CXXᬃᣕI 2 Cᘏ㒓Ӵ䕧ण䆂DŽI 2 Cᰃϔ⾡ঠ৥ǃϸ㒓І㸠䗮䆃᥹ষˈߚ߿ᰃІ㸠᭄᥂
㒓SDA੠І㸠ᯊ䩳㒓SCLDŽϸḍ㒓䛑ᖙ乏䗮䖛ϔϾϞᢝ⬉䰏᥹ࠄ⬉⑤DŽ‫݌‬ൟⱘᘏ㒓䜡㕂བ೒4᠔
⼎
VCC
RP
RP
SDA
ϸ㒓І㸠
㒓І㸠
᭄᥂ᘏ㒓
SCL
MPU
24Cxx
݊Ҫ໪ೈ
೒4‫݌‬ൟϸ㒓ᘏ㒓䜡㕂
ᘏ㒓Ϟথ䗕᭄᥂ⱘ఼ӊ㹿⿄԰থ䗕఼ˈ᥹ᬊ᭄᥂ⱘ఼ӊ㹿⿄԰᥹ᬊ఼DŽ᥻ࠊֵᙃѸᤶⱘ
఼ӊ㹿⿄԰Џ఼ӊˈফЏ఼ӊ᥻ࠊⱘ఼ӊ߭㹿⿄԰Ң఼ӊDŽЏ఼ӊѻ⫳І㸠ᯊ䩳SCLˈ᥻ࠊ
ᘏ㒓ⱘ䆓䯂⢊ᗕǃѻ⫳START੠STOPᴵӊDŽ24CXX೼I 2 Cᘏ㒓Ё԰ЎҢ఼ӊᎹ԰DŽ
া᳝ᔧᘏ㒓໘Ѣぎ䯆⢊ᗕᯊᠡৃҹਃࡼ᭄᥂Ӵ䕧DŽ↣⃵᭄᥂Ӵ䕧ഛᓔྟѢSTARTᴵӊˈ
㒧ᴳѢSTOPᴵӊˈѠ㗙П䯈ⱘ᭄᥂ᄫ㡖᭄ᰃ≵᳝䰤ࠊⱘˈ⬅ᘏ㒓ϞⱘЏ఼ӊ‫އ‬ᅮDŽֵᙃҹᄫ
㡖˄8ԡ˅ЎऩԡӴ䕧ˈ㄀9ԡᯊ⬅᥹ᬊ఼ѻ⫳ᑨㄨDŽ
䍋ྟ੠‫ذ‬ℶᴵӊ
᭄᥂੠ᯊ䩳㒓䛑Ў催߭⿄ᘏ㒓໘೼ぎ䯆⢊ᗕDŽᔧSCLЎ催⬉ᑇᯊSDAⱘϟ䰡⊓˄催ࠄԢ
S Ў催
ি‫خ‬䍋ྟᴵӊ˄STARTˈㅔ‫ݭ‬ЎS˅ˈSDAⱘϞछ⊓˄Ԣࠄ催˅߭ি‫ذخ‬ℶᴵӊ˄STOPˈㅔ
ㅔ‫ݭ‬ЎS˅ˈSDAⱘϞछ⊓˄Ԣࠄ
‫ݭ‬ЎP˅DŽখ㾕೒5DŽ
S
S
䍋ྟᴵӊ
೒5 䍋ྟᴵӊ੠‫ذ‬ℶᴵӊⱘᅮН
Jan. 2008
Rev 1.0
6
24C02/24C04/24C08/24C16/24C32/24C64
13. 䆺㒚᪡԰䇈ᯢ˄㓁˅
ԡӴ䕧
↣Ͼᯊ䩳㛝‫ކ‬Ӵ䗕ϔԡ᭄᥂DŽSCLЎ催ᯊSDAᖙ乏ֱᣕ〇ᅮˈ಴ЎℸᯊSDAⱘᬍব㹿䅸Ў
ᰃ᥻ࠊֵোDŽԡӴ䕧খ㾕೒6DŽ
SDA
᭄᥂㒓
〇ᅮ
᭄᥂᳝ᬜ
SCL
‫ܕ‬䆌
᭄᥂
ᬍব
೒6 ԡӴ䕧
ᑨㄨ
ᘏ㒓Ϟⱘ᥹ᬊ఼↣᥹ᬊࠄϔϾᄫ㡖ህѻ⫳ϔϾᑨㄨˈЏ఼ӊᖙ乏ѻ⫳ϔϾᇍᑨⱘ乱໪ⱘ
ѻ⫳ϔϾᑨㄨˈЏ఼ӊᖙ乏ѻ⫳ϔ
ᯊ䩳㛝‫ˈކ‬㾕೒7DŽ
থ䗕఼䕧ߎⱘ᭄᥂
䴲ᑨㄨ
᥂
᥹ᬊ఼䕧ߎⱘ᭄᥂
ᑨㄨ
఼ӊথߎⱘSCL
Џ఼ӊথߎⱘSCL
1
8
2
S
9
ᑨㄨᯊ䩳㛝‫ކ‬
䍋ྟᴵӊ
䍋ྟᴵӊ
೒7 I 2 Cᘏ㒓ⱘᑨㄨ
᥹ᬊ఼ᢝԢSDA㒓㸼⼎ᑨㄨˈᑊ೼ᑨㄨ㛝‫ކ‬ᳳ䯈ֱᣕ〇ᅮⱘԢ⬉ᑇDŽᔧЏ఼ӊ԰᥹ᬊ఼
ԢSDA㒓
ᯊˈᖙ乏থߎ᭄᥂Ӵ䕧㒧ᴳⱘֵো㒭থ䗕఼ˈेᅗ೼᳔ৢϔϾᄫ㡖Пৢⱘᑨㄨ㛝‫ކ‬ᳳ䯈ϡӮ
᥂Ӵ
ѻ⫳ᑨㄨֵো˄ϡᢝԢSDA˅DŽ䖭⾡ᚙ‫މ‬ϟˈথ䗕఼ᖙ乏䞞ᬒSDA㒓Ў催ҹ֓Џ఼ӊѻ⫳‫ذ‬
ℶᴵӊDŽ
Jan. 2008
Rev 1.0
7
24C02/24C04/24C08/24C16/24C32/24C64
13. 䆺㒚᪡԰䇈ᯢ˄㓁˅
఼ӊᇏഔ
䍋ྟᴵӊՓ㛑㢃⠛䇏‫ݭ‬᪡԰ৢˈEEPROM䛑㽕∖᳝8ԡⱘ఼ӊഄഔֵᙃ˄㾕೒8˅DŽ
఼ӊഄഔֵᙃ⬅"1"ǃ"0"ᑣ߫㒘៤ˈࠡ4ԡབ೒Ё᠔⼎ˈᇍѢ᠔᳝І㸠EEPROM䛑ᰃϔḋⱘ DŽ
ᇍѢ24C02/32/64ˈ䱣ৢ3ԡA2ǃA1੠A0Ў఼ӊഄഔԡˈᖙ乏Ϣ⹀ӊ䕧ܹᓩ㛮ֱᣕϔ㟈DŽ
ᇍѢ24C04ˈ䱣ৢ2ԡA2੠A1Ў఼ӊഄഔԡˈ঺1ԡЎ义ഄഔԡDŽA2੠A1ᖙ乏Ϣ⹀ӊ䕧
ܹᓩ㛮ֱᣕϔ㟈ˈ㗠A0ᰃぎ㛮DŽ
ᇍѢ24C08ˈ䱣ৢ1ԡA2Ў఼ӊഄഔԡˈ঺2ԡЎ义ഄഔԡDŽA2ᖙ乏Ϣ⹀ӊ䕧ܹᓩ㛮ֱ
ᣕϔ㟈ˈ㗠A1੠A0ᰃぎ㛮DŽ
ᇍѢ24C16ˈ᮴఼ӊഄഔԡˈ3ԡ䛑Ў义ഄഔԡˈ㗠A2ǃA1੠A0ᰃぎ㛮DŽ
఼ӊഄഔֵᙃⱘLSBЎ䇏/‫ݭ‬᪡԰䗝ᢽԡˈ催Ў䇏᪡԰ˈԢЎ‫ݭ‬᪡԰DŽ
㢹↨䕗఼ӊഄഔϔ㟈ˈEEPROMᇚ䕧ߎᑨㄨ"0"DŽབᵰϡϔ㟈ˈ߭䖨ಲࠄᕙᴎ⢊ᗕDŽ
24C02
24C02/32/64
1
0
1
0
A2
A1
A0
MSB
R/W
LSB
24C04
1
0
1
0
A2
A1
P0
R/W
24C08
1
0
1
0
A2
P1
P0
R/W
24C16
1
0
1
0
P2
P1
P0
R/W
೒8 ఼ӊഄഔ
఼ӊ᪡԰
ᕙᴎ῵ᓣ
EEPROM‫݋‬᳝Ԣࡳ㗫ᕙᴎⱘ⡍⚍ˈᴵӊЎ˖˄1˅⬉⑤Ϟ⬉˗˄2˅᥹ᬊ‫ذ‬ℶᴵӊঞᅠ៤ӏ
ԩ‫ݙ‬䚼᪡԰ৢDŽ
ᄬ‫ټ‬໡ԡ
ᔧण䆂Ёѻ⫳Ёᮁǃᥝ⬉៪㋏㒳໡ԡৢˈI 2 Cᘏ㒓ৃ䗮䖛ҹϟℹ偸໡ԡ˖
˄1˅ѻ⫳9Ͼᯊ䩳਼ᳳDŽ
˄2˅ᔧSCLЎ催ᯊˈSDAгЎ催DŽ
˄3˅ѻ⫳ϔϾ䍋ྟᴵӊDŽ
‫ݭ‬᪡԰
1. ᄫ㡖‫ݭ‬
‫ݭ‬᪡԰㽕∖೼᥹ᬊ఼ӊഄഔ੠ACKᑨㄨৢˈ᥹ᬊ8ԡⱘᄫഄഔDŽ᥹ᬊࠄ䖭ϾഄഔৢEEPROM
ᑨㄨ"0"ˈ✊ৢᰃϔϾ8ԡ᭄᥂DŽ೼᥹ᬊ8ԡ᭄᥂ৢˈEEPROMᑨㄨ"0"ˈ᥹ⴔᖙ乏⬅Џ఼ӊথ䗕
‫ذ‬ℶᴵӊᴹ㒜ℶ‫ݭ‬ᑣ߫DŽ
ℸᯊEEPROM䖯ܹ‫ݙ‬䚼‫਼ݭ‬ᳳtWRˈ᭄᥂‫ܹݭ‬䴲ᯧ༅ᗻᄬ‫఼ټ‬Ёˈ೼ℸᳳ䯈᠔᳝䕧ܹ䛑᮴ᬜ DŽ
Ⳉࠄ‫਼ݭ‬ᳳᅠ៤ˈEEPROMᠡӮ᳝ᑨㄨ˄㾕೒9˅DŽ
䍋ྟ
ᴵӊ
఼ӊ
ഄഔ
‫ݭ‬
ᄫഄഔ
᭄᥂
‫ذ‬ℶ
ᴵӊ
SDA 㒓
M
S
B
L R AM
S / CS
BWK B
LA
SC
BK
೒9 ᄫ㡖‫ݭ‬
Jan. 2008
Rev 1.0
8
A
C
K
24C02/24C04/24C08/24C16/24C32/24C64
13.
2.
24C02器件按8字节/页执行页写，24C04/08/16器件按16字节/页执行页写，24C32/64器件
按32字节/页执行页写。
页写初始化与字节写相同，只是主器件不会在第一个数据后发送停止条件，而是在EEPROM
的ACK以后，接着发送7个（24C02）或15个（24C04/08/16）或31个（24C32/64）数据。
EEPROM收到每个数据后都应答“0”。最后仍需由主器件发送停止条件，终止写序列（见图10）。
接收到每个数据后，字地址的低3位（24C02）或4位（24C04/08/16）或5位（24C32/64）
内部自动加1，高位地址位不变，维持在当前页内。当内部产生的字地址达到该页边界地址时，
随后的数据将写入该页的页首。如果超过8个（24C02）或16个（24C04/08/16）或32个
（24C32/64）数据传送给了EEPROM，字地址将回转到该页的首字节，先前的字节将会被覆盖。
䍋ྟ
ᴵӊ
఼ӊ
ഄഔ
‫ݭ‬
᭄᥂ ( n )
ᄫ地址(n)
᥂ ( n+x )
᭄᥂
᭄᥂ ( n+1 )
‫ذ‬ℶ
ᴵӊ
SDA 㒓
M
S
B
L R AM
S / CS
BWK B
LA
SC
BK
A
C
K
A
C
K
A
C
K
图10页写
3. ᑨㄨᶹ䆶
ᬜˈℸᯊेৃਃࡼᑨㄨᶹ䆶˖থ䗕
ϔᮺ‫ݙ‬䚼‫਼ݭ‬ᳳਃࡼˈEEPROM䕧ܹ᮴ᬜˈℸᯊेৃਃࡼᑨㄨᶹ䆶˖থ䗕䍋ྟᴵӊ੠఼ӊ
‫਼ݭ‬ᳳᅠ៤ˈ
៤ EEPROMᠡᑨㄨ"0"
ഄഔ˄䇏/‫ݭ‬ԡЎᳳᳯⱘ᪡԰˅DŽা᳝‫ݙ‬䚼‫਼ݭ‬ᳳᅠ៤ˈEEPROMᠡᑨㄨ"0"DŽПৢৃ㒻㓁䇏/‫ݭ‬᪡
԰DŽ
ᑨㄨᶹ䆶⌕⿟㾕೒11DŽ
থ䗕‫ݭ‬ੑҸ
থ䗕‫ذ‬ℶᴵӊ
ਃࡼ‫਼ݭ‬ᳳ
থ䗕䍋ྟᴵӊ
থ䗕᥻ࠊᄫ㡖
R/W = 0
఼ӊᰃ৺ᑨㄨ
(ACK = 0)?
ᰃ
ϟϔ᪡԰
೒ᑨㄨᶹ䆶⌕⿟
Jan. 2008
Rev 1.0
9
৺
24C02/24C04/24C08/24C16/24C32/24C64
䇏᪡԰
䇏᪡԰Ϣ‫ݭ‬᪡԰߱ྟ࣪Ⳍৠˈাᰃ఼ӊഄഔЁⱘ䇏/‫ݭ‬䗝ᢽԡᑨЎ"1"DŽ᳝ϝ⾡ϡৠⱘ䇏᪡԰ᮍ
ᓣ˖ᔧࠡഄഔ䇏ˈ䱣ᴎ䇏੠乎ᑣ䇏DŽ
1. ᔧࠡഄഔ䇏
‫ݙ‬䚼ഄഔ䅵఼᭄ֱᄬⴔϞ⃵䆓䯂ᯊ᳔ৢϔϾഄഔࡴ1ⱘؐDŽা㽕㢃⠛᳝⬉ˈ䆹ഄഔህϔⳈֱᄬDŽ
ᔧ䇏ࠄ᳔ৢ义ⱘ᳔ৢᄫ㡖ˈഄഔӮಲ䕀ࠄ0˗ᔧ‫ࠄݭ‬ᶤ义ሒⱘ᳔ৢϔϾᄫ㡖ˈഄഔӮಲ䕀ࠄ䆹义ⱘ
佪ᄫ㡖DŽ
᥹ᬊ఼ӊഄഔ˄䇏/‫ݭ‬䗝ᢽԡЎ"1"˅ǃEEPROMᑨㄨACKৢˈᔧࠡഄഔⱘ᭄᥂ህ䱣ᯊ䩳䗕ߎ DŽ
Џ఼ӊ᮴䳔ᑨㄨ"0"ˈԚ䳔থ䗕‫ذ‬ℶᴵӊ˄㾕೒12˅DŽ
䍋ྟ
ᴵӊ
఼ӊ
ഄഔ
᭄᥂
䇏
‫ذ‬ℶ
ᴵӊ
SDA 㒓
M
S
B
N
O
L RA
S/C
BWK
A
C
K
೒12ᔧࠡഄഔ䇏
2. 䱣ᴎ䇏
䱣ᴎ䇏䳔‫ݭܜ‬ϔϾⳂᷛᄫഄഔˈϔᮺEEPROM᥹ᬊ఼ӊഄഔ੠ᄫഄഔᑊᑨㄨњACKˈЏ
EEPROM
఼ӊህѻ⫳ϔϾ䞡໡ⱘ䍋ྟᴵӊDŽ
✊ৢˈЏ఼ӊথ䗕఼ӊഄഔ˄䇏/‫ݭ‬䗝ᢽԡЎ"1"˅ˈEEPROMᑨㄨACKˈᑊ䱣ᯊ䩳䗕ߎ᭄
᥂DŽЏ఼ӊ᮴䳔ᑨㄨ"0"ˈԚ䳔থ䗕‫ذ‬ℶᴵӊ˄㾕೒13˅DŽ
䍋ྟ
ᴵӊ
఼ӊ
ഔ
ഄഔ
ᄫഄഔ (n)
‫ݭ‬
䍋ྟ
ᴵӊ
఼ӊ
ഄഔ
䇏
᭄᥂ (n)
‫ذ‬ℶ
ᴵӊ
SDA 㒓
M
S
B
L R AM
S / CS
BWK B
LA M
SC S
BK B
N
O
LRA
S /C
BWK
A
C
K
‫ݭ‬ഄഔ
೒13 䱣ᴎ䇏
3. 乎ᑣ䇏
ᑣ䇏
乎ᑣ䇏ৃҹ䗮䖛“ᔧࠡഄഔ䇏”៪“䱣ᴎ䇏”ਃࡼDŽЏ఼ӊ᥹ᬊࠄϔϾ᭄᥂ৢˈᑨㄨACKDŽা㽕
ᑣ䇏ৃҹ䗮䖛“ᔧࠡഄ
EEPROM᥹ᬊࠄACKˈᇚ㞾ࡼ๲ࡴᄫഄഔᑊ㒻㓁䱣ᯊ䩳থ䗕ৢ䴶ⱘ᭄᥂DŽ㢹䖒ࠄᄬ‫఼ټ‬ഄഔ᳿
᥹ᬊࠄACKˈᇚ
ሒˈഄഔ㞾ࡼಲ䕀ࠄ0ˈҡৃ㒻㓁乎ᑣ䇏প᭄᥂DŽ
ࡼಲ䕀ࠄ0
Џ఼ӊϡᑨㄨ"0"ˈ㗠থ䗕‫ذ‬ℶᴵӊˈेৃ㒧ᴳ乎ᑣ䇏᪡԰˄㾕೒14˅DŽ
ㄨ"0
఼ӊ
ഄഔ
䇏
᭄᥂ ( n )
᭄᥂( n+1 )
‫ذ‬ℶ
᭄᥂ ( n+x ) ᴵӊ
᭄᥂ ( n+2 )
SDA 㒓
RA
/C
WK
A
C
K
A
C
K
೒14乎ᑣ䇏
Jan. 2008
Rev 1.0
10
A
C
K
N
O
A
C
K
24C02/24C04/24C08/24C16/24C32/24C64
14. ‫݌‬ൟᑨ⫼
Vcc
1
2
3
4
1
2
3
4
U1
A0
24C02
VCC
A1
SCL
A2
SDA
GND
WP
఼ӊഄഔ˖ 0xA2
U2
A0
24C02
VCC
A1
SCL
A2
SDA
GND
WP
఼ӊഄഔ˖
ഄഔ˖ 0xA0
0xxA0
A
R1
10K
8
SCL
L
6
SDA
D
5
7
Vcc
8
6
5
7
೒15
೒
15 EEPROMⱘ㑻㘨
Jan. 2008
Rev 1.0
11
R2
10K
24C02/24C04/24C08/24C16/24C32/24C64
1
15. ᇕ㺙ሎᇌ
SOP8L
A3
A1
A2
1
4
B
B1
R2
3
2
A
R
R1
C33
C
C4
C2
C
C1
B2
D1
D
ヺো
A
A1
A2
A3
B
B1
ሎᇌ(mm)
᳔
᳔໻ؐ
᳔ᇣؐ
ヺো
4.95
5.15
0.47
0.37
1.27(‫݌‬ൟؐ)
0.41(‫݌‬ൟؐ)
5.80
6.20
4.00
3.80
5.0(‫݌‬ൟؐ)
B2
C
C1
C2
1.30
0.55
0.55
C3
C4
D
D1
R1
R2
1
2
3
4
1.50
0.65
0.65
Jan. 2008
Rev 1.0
12
ሎᇌ(mm)
᳔ᇣؐ
᳔໻ؐ
0.05
0.20
0.20(‫݌‬ൟؐ)
1.05(‫݌‬ൟؐ)
0.40
0.60
0.07(‫݌‬ൟؐ)
0.07(‫݌‬ൟؐ)
17 (‫݌‬ൟؐ)
13 (‫݌‬ൟؐ)
4 (‫݌‬ൟؐ)
12 (‫݌‬ൟؐ)
24C02/24C04/24C08/24C16/24C32/24C64
DIP8L
D2
A
θ1
θ2
B
θ3
D1
C3
C2
C
C1
C4
C
4
D
A5
A1
A3
A4
4
A2
ヺো
A
ሎᇌ(mm)
᳔ᇣؐ
᳔ᇣؐ
᳔໻ؐ
C2
0.5(‫݌‬ൟؐ)
1.524(‫݌‬ൟؐ)
1.524(‫݌‬
C3
3.3(‫݌‬ൟؐ)
0.53
C4
1.57(‫݌‬ൟؐ)
0.39
A2
2
ሎᇌ(mm)
9
9.50
9.30
A1
᳔໻ؐ
ヺো
A3
2.54(‫݌‬ൟؐ)
D
8.20
8.80
A4
0.66(‫݌‬ൟؐ)
D1
0.20
0.35
D2
7.62
7.87
0.99(‫݌‬ൟؐ)
A5
6.3
B
6.5
7.20(‫݌‬ൟؐ)
C
3.30
C1
3.50
Jan. 2008
Rev 1.0
13
1
8 (‫݌‬ൟؐ)
2
8 (‫݌‬ൟؐ)
3
5 (‫݌‬ൟؐ)