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AL21 Logic Diagram
Up Keypad
VEBU_2.9
VBOOST BackLight VBOOST
FLASH
VEBU_1.8
TFT CellSRAM
(write,blue,re 128MBits VEBU_2.9
64K 16MBits
d) VEBU_1.8
3.0V
LIGHT_DISP 130*130 3.0V
LIGHT_2
KeyBoard LCD_CS
D0-D15
A0-A23 D0-D15
Hall
DISPLAY Switch
KB0 LCD_RS CS_FLASH1 A0-A20
BackLight LCD_RESET BHE CS_SRAM
KB2-KB4
KB6-KB9 Control LCD_CLK RD BHE
LCD_DAT WR RD
LCD_ID F_WAIT WR
LIGHT_LCD
Low Keypad RESET_UC
MICP2
IO Interface
VBOOST BackLight Keypad TX
(write,blue,re LIGHT_1 BackLight RX
LIGHT_KB
Control AC_DCD
d)
E-GOLDlite 1.5V
GND
AC_RTS
MICP1 STEPUP AC_CTS
MICN1/GND_MIC
PMB7860 _SHDN
VDD_RTC
VDIG_2.65
VDDA_2.65
GND_MIC
POWER
EPPA1
EPPA2
C166S+TEAKlite EPN1_FIL
EPP1_FIL Audio_L
VIBRA_UC CHARGE_UC Audio_R
Receiver WA_DOG
RESET_UC
CCIO I2SWA0
RF_ANT_DET CCCLK I2SDA0 EPP1
RF_AFC CCRST I2SCA0 Speaker
Vibra RF_BAND_SW CCVCC RTC_INT EPN1
BATT+
RF_DAT SLEEPQ
RF_CLK SIM CARD KB7 SPEAKER
RF_STR VDD_RF1
RF_SIN26M 2.9V
VDD_RF2 VDIG_2.65 VEBU_2.9
TVCO
LDO
RF_TXONPA
RF_RAMP1
Salzburg 75
RF_FE_DCR_GSM Charger
RF RF_FE_DCR_DCS Control /Twigo 3+75 1.8V VEBU_1.8
POWER VDIG_2.65
Interface Circuit LDO
B6E VDD_RF1
VDD_RF2
BATT+ Lilon-Akku BATT+
DC-DC VBOOST
GND 600mAh GND STEPUP Convertor
_SHDN