User Manual

6-Dec.-2008 Ver.0.5
TAIYO YUDEN Confidential
& Tentative
8/39
TAIYO YUDEN
EY
T
MECS
Control No.
HD-AE-A080137 (2/3)
Control name
Electrical characteristics
AC Specifications
The Specification applies for Topr.= 25 degrees C, VDD_3.3V=3.3V
No. Parameter Condition Symbol Min Typ Max Unit Remark
1
VDD_3.3V Rise Time from 0V to
3.15V
t1 0 2 ms Note 1
2
VDD_3.3V=3.15V to /RESET High t2 10 ms Note 2
3
/RESET High to Module Ready t3 ( 300 ) 3000 ms Notes 3, 4
4
/RESET pulse width t4 6 ms
5
DETACH High to USB I/F High-Z t5 130 ms
6
DETACH Low to USB I/F Active t6 0 10 ms
7
/RESET High to /RESET Low t7 3000 ms
Note 5
8
/RESET Low to USB_I/F High-Z t8 0 10 ms
9
Module Active to /RESET Low t9 0 ms
Note 5
10
/RESET Low to VDD_3.3V Off t10 0 ms
Notes:
1. This module has an internal EEPROM and a function to erase/sort unnecessary data if certain HCI commands are
issued and consume more than a certain level of free space in the EEPROM.
This operation occurs at every module initialization (power-on).
If supply voltage becomes non-defined states during initialization or writing in EEPROM, data in EEPROM
might be destroyed. If the data in EEPROM is destroyed, module will not work correctly.
Therefore please be sure to stabilize power source before /RESET release.
In addition please design module peripheral circuits to avoid temporary blackout of power source during
operation. Please refer HD-AE-C 080137 for HCI command which rewrites flash memory data.
2. Input /RESET signal of 10ms and more in condition of VDD_3.3V at over 3.15V.
3. When the module is ready to accept the command, its module outputs the “0F 04 00 01 00 00” (Hex) to the USB
Data Line. After that, please access to the module.
4. The Typ. is a reference value. The value may change depending on the firmware version, conditions of use.
5. You don’t need to wait t6 if you confirm that this module has output “0F 04 00 01 00 00” (Hex).