eltrend
WT5082
Pager Controller with POCSAG Decoder、12KB SRAM、
296KB ROM and 56x32/56x33 LCD Driver
v.0.97
PIN FUNCTION
(128-pin LQFP)
PIN NAME
COM1~COM15
SEG0~SEG31
GND
VDD
SEG32~SEG55
COM31~COM16
COM32
BIAS1~BIAS4
V
LCD
Vpp
Cb
Ca
P14_EPI4
P15_EPI5
P20_LMP
P21_SS
P22
P23_ECS
P24_ECK
P25_EDI
P26_EDO
P27_ RE2
P06_RDY
P01_RE1
P00_RE
P04_ RFDI
P07
PIN#
1~15
16~47
48
49
50~73
74~89
90
91~94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
In/Out
Output
Output
P
P
Output
Output
Output
Output
Input
Output
Output
Output
Input
Input
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Output
Output
Input
I/O
FUNCTIONS
LCD common output
LCD segment output
Ground
Power Source
LCD segment output
LCD common output
LCD common output (for
ICON
)
LCD bias voltage output
LCD voltage supply
V
RO
*2
LCD pumping capacitor
LCD pumping capacitor
EPI4, Battery low detect
EPI5, Battery remove detect
General I/O or Lamp output
General I/O, SS output pin for Serial I/O
or UART serial output
General I/O or PLL_LE
General I/O for EEPROM CS
General I/O for EEPROM CK
& PLL CK
General I/O for EEPROM DI
& PLL DATA
General I/O for EEPROM DO
RF control signal 2 output (RF enable)
or MISO input pin for Serial I/O
General I/O or RDY input pin for Serial I/O;
EPI6 or UART Serial Input
RF control signal 1 output (quick charge)
or MOSI output pin for Serial I/O
RF control signal output or SCK output pin for SIO
RF signal data input
General I/O port , Input port for EPI7 or PWM
signal output
WELTREND [ WELTREND SEMICONDUCTOR ]
