Texas Instruments bq78350-R1 Technical Reference

www.ti.com 0x00 ManufacturerAccess() and 0x44 ManufacturerBlockAccess()
101
SLUUBD3D–September 2015–Revised September 2018
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SBS Commands
17.2.8 ManufacturerAccess() 0x0008 Static Chem DF Signature
The device can return the data flash checksum. When 0x0008 is written to ManufacturerAccess(), the
bq78350-R1 returns the signature of all static chemistry DF on a subsequent read on
ManufacturerBlockAccess() or ManufacturerData() after a wait time of 250 ms. The MSB is set to 1 if the
calculated signature does not match the signature stored in DF.
17.2.9 ManufacturerAccess() 0x0009 All DF Signature
NOTE: This command is supported in the bq78350-R2 device, not the bq78350-R1 device. The
bq78350-R1 firmware includes some DF values that can vary from device to device. This
causes the checksum to return different values on different devices even if the same .srec is
loaded. Contact TI for more information.
The device can return the data flash checksum. When 0x0009 is written to ManufacturerAccess(), the
bq78350-R1 returns the signature of all DF parameters on a subsequent read on
ManufacturerBlockAccess() or ManufacturerData() after a wait time of 250 ms. The MSB is set to 1 if the
calculated signature does not match the signature stored in DF. It is normally expected that this signature
will change due to updates of lifetime, gauging, and other information.
17.2.10 ManufacturerAccess() 0x0010 SHUTDOWN Mode
The device can be sent to SHUTDOWN mode before shipping to reduce power consumption to a
minimum. The device will wake up when a voltage is applied to companion AFE bq769x0. When the pack
is sealed, this feature requires the command be sent twice, one after the other, for safety. Once
SHUTDOWN mode is enabled, it is not possible to clear it without entering SHUTDOWN mode.
Status Condition Action
Normal OperationStatus()[SDM] = 0 Shutdown feature is armed internally.
Arm
OperationStatus()[SEC1,SEC0] = [1, 1]
0x0010 sent to ManufacturerAccess()
Shutdown feature is armed internally.
Enable
0x0010 to ManufacturerAccess() when
OperationStatus[SEC1,SEC0] = [1, 1] OR
0x0010 to ManufacturerAccess() when shutdown
feature is armed.
OperationStatus()[SDM] = 1
Trip Current() = 0 AND OperationStatus()[SDM] = 1 No charging or discharging allowed. Device shutdown
Recovery
Voltage on companion AFE bq769x0 TS1 pin >
V
BOOT
Device powers up (reset)
17.2.11 ManufacturerAccess() 0x0011 SLEEP Mode
The device can be send to SLEEP mode with ManufacturerAccess() if the sleep conditions are met.
Status Condition Action
Enable 0x0011 to ManufacturerAccess() OperationStatus()[SLEEPM] = 1
Activate |Current()| < Power:Sleep Current
Turn off PCHG FET
Turn off CHG FET if FET Options[SLEEPCHG] = 0
Device goes to sleep.
Device wakes up every Power:Sleep Voltage Time
period to measure voltage and temperature.
Device wakes up every Power:Sleep Current Time
period to measure current.
Exit |Current()| > Configuration:Sleep Current
OperationStatus()[SLEEPM] = 0
Returns to NORMAL mode.
Exit SafetyAlert() flag or PFAlert() flag set
OperationStatus()[SLEEPM] = 0
Returns to NORMAL mode

Texas Instruments bq78350-R1 Specifications

General

Brand	Texas Instruments
Model	bq78350-R1
Category	Controller
Language	English