參數(shù)資料
型號(hào): AK2573AVB
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: 125M / 156M Laser Diode Driver + APC
中文描述: 1.25億/ 1.56 apc的激光二極管驅(qū)動(dòng)器
文件頁數(shù): 31/38頁
文件大?。?/td> 286K
代理商: AK2573AVB
ASAHI KASEI [AK2573A]
<MS0189-E-01>
-31-
2004/5
8.3 EEPROM
EEPROM memory map is shown in Table 8-3, 8-4 and 8-5.
EEPROM access is limited with WP pin and Operation mode (refer toTable 9-1, for more information).
WP = “L”: Full access
WP = “H”: User area only with read only
(Note) The AKM factory adjusted data are stored in advance at address (Device Address2 = 011, Address=60h) for
the offset of the on-chip temperature sensor. If such excess temperature stress is tobe applied tothis device
which exceeds a guaranteed EEPROM data retention conditions ( for 10 years at 85
the pre-determined value in advance and tore-write the same data back into EEPROM after an exposure to
the excess temperature environment. Even if the exposure time is shorter than the retention time, any
accelerated temperature stress tests (such as baking) are performed, it is recommended to read the pre-set
data first and to re-write it after the tests.
), it is important to read
Table 8-3 EEPROM Address MAP
Device
Address
A0h
00h (0)
7Fh (127)
A0h
80h (128)
FFh (255)
A2h
00h (0)
FFh (255)
A4h
00 h(0)
7F h(127)
A4h
80h (128)
FFh (255)
A6h
00h (0)
1Fh(31)
A6h
20h (32)
3Fh (63)
A6h
40h (64)
5Fh (95)
Address
DATA (D7-D0)
Initial
Value
00h
Remark
User Area
(1kbit)
No Memory
E_DAC1_TC
Temperature data for I-DAC1 (1kbit)
00h
Addressing with R_TEMP
(1.5
step)
E_DAC2_TC
Temperature data for I-DAC2 (1kbit)
00h
Addressing with R_TEMP
(1.5
step)
E_DUTY_TC (5bit)
Temperature
Adjustment (256bit)
E_APC_TRGT_TC (5bit)
Temperature data for APC FB
reference (R_APC_TARGT) (256bit)
MSB 4bit: E_CURRALM_DAC1_TC
LSB 4bit: E_CURRALM_DAC2_TC
Temperature data for CURRALM
(256bit)
Adjustment data
(256bit)
data
for
Duty
00h
Addressing with MSB 5bit of
R_TEMP
(6
step)
Addressing with MSB 5bit of
R_TEMP
(6
step)
Addressing with MSB 5bit of
R_TEMP
(6
step)
00h
FFh
A6h
60h (96)
7Fh (255)
see Table 8-4 and 8-5
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