參數(shù)資料
型號： 71M6533-IGT/F
廠商： TERIDIAN SEMICONDUCTOR CORP
元件分類： 模擬信號調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PQFP100
封裝： LEAD FREE, LQFP-100
文件頁數(shù)： 77/124頁
文件大?。?/td> 2008K
代理商： 71M6533-IGT/F
71M6533/71M6534 Data Sheet
FDS_6533_6534_004
56
2007-2009 TERIDIAN Semiconductor Corporation
v1.1
2.3.1
BROWNOUT Mode
In BROWNOUT mode, most non-metering digital functions are active (as shown in Table 45) including
ICE, UART, EEPROM, LCD and RTC. In BROWNOUT mode, a low-bias current regulator will provide
2.5 Volts to V2P5 and V2P5NV. The regulator has an output called BAT_OK to indicate that it has suffi-
cient overhead. When BAT_OK = 0, the part will enter SLEEP mode. From BROWNOUT mode, the pro-
cessor can voluntarily enter LCD or SLEEP modes. When system power is restored, the part will auto-
matically transition from any of the battery modes to MISSION mode, once the PLL has settled.
Table 45: Available Circuit Functions
Circuit Function
System Power
Battery Power (Nonvolatile Supply)
MISSION
BROWNOUT
LCD
SLEEP
CE
Yes
–
CE/MPU Data RAM
Yes
–
FIR
Yes
–
Analog circuits:
Yes
–
MPU clock rate
From PLL, as de-
fined by MPU_DIV
28.672 kHz
(7/8 of 32768 Hz)
–
MPU_DIV
Yes
–
ICE
Yes
–
DIO Pins
Yes
–
Watchdog Timer
Yes
–
LCD
Yes
–
EEPROM Interface (2-wire)
Yes
Yes (8 kb/s)
–
EEPROM Interface (3-wire)
Yes
Yes (16 kb/s)
–
UART
Yes
300 bd
–
Optical TX modulation
Yes
–
Flash Read
Yes
–
Flash Page Erase
Yes
–
Flash Write
Yes
–
XRAM Read and Write
Yes
–
Wakeup Timer
Yes
Oscillator and RTC
Yes
XRAM data preservation
Yes
–
V3P3D voltage output pin
Yes
–
GPO – GP7 registers
Yes
– indicates not active
The MPU will run at 7/8 of the crystal clock rate in BROWNOUT mode. This permits the UARTs to be
operated at 300 bd. In this mode, the MPU clock has substantial short-term jitter.
The value of MPU_DIV will be remembered (not changed) as the part enters and exits BROWNOUT.
MPU_DIV will be ignored during BROWNOUT.
While PLL_OK = 0, the I/O RAM bits ADC_E and CE_E are held in the zero state disabling both the ADC
and the CE. When PLL_OK falls, the CE program counter is cleared immediately and all FIR processing
halts.
Figure 21 shows the functional blocks active in BROWNOUT mode.
相關(guān)PDF資料
PDF描述
71M6534-IGT/F SPECIALTY ANALOG CIRCUIT, PQFP120
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71M6533H-IGT/F SPECIALTY ANALOG CIRCUIT, PQFP100
71M6533-IGT/F SPECIALTY ANALOG CIRCUIT, PQFP100
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