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PRODUCT OVERVIEW S3C2440A RISC MICROPROCESSOR
1-20
THE TABLE BELOW SHOWS I/O TYPES AND DESCRIPTIONS.
Input (I)/Output (O) Type Descriptions
d12i(vdd12ih) 1.2V Vdd for alive power
d12c(vdd12ih_core), si(vssih) 1.2V Vdd/Vss for internal logic
d33o(vdd33oph), so(vssoph) 3.3V Vdd/Vss for external logic
d33th(vdd33th_abb)
,sth(vssbbh_abb)
3.3V Vdd/Vss for analog circuitry
d12t(vdd12t_abb), st(vssbb_abb) 1.2V Vdd/Vss for analog circuitry
drtc(vdd30th_rtc) 3.0V Vdd for RTC power
t8(phbsu100ct8sm)
Bi-directional pad, LVCMOS schmitt-trigger, 100Kohm pull-up resistor with
control, tri-state, Io=8mA
is(phis) Input pad, LVCMOS schmitt-trigger level
us(pbusb0) USB pad
t10(phtot10cd) 5V tolerant Output pad, Tri-state .
ot(phot8) Output pad, tri-state, Io=8mA
b8(phob8) Output pad, Io=8mA
t16(phot16sm) Output pad, tri-state, medium slew rate, Io=16mA
r10(phiar10_abb) Analog input pad with 10-ohm resistor
ia(phia_abb) Analog input pad
gp(phgpad_option) Pad for analog pin
m26(phsoscm26_2440a) Oscillator cell with enable and feedback resistor
t12(phbsu100ct12sm)
Bi-directional pad, LVCMOS schmitt-trigger, 100Kohm pull-up resistor with
control, tri-state, Io=12mA
d8(phbsd8sm) Bi-directional pad, LVCMOS schmitt-trigger, Open Drain, Io=8mA
t10s(phtot10cd_10_2440a)
output pad, LVCMOS , tri -state, output drive strenth control,
Io=4,6,8,10mA
b12s(phtbsu100ct12cd_12_2440a)
Bi-directional pad, LVCMOS schmitt-trigger, 100Kohm pull-up
resistor with control, tri -state,output drive strenth control, Io=6,8,10,12mA
d2s(phtbsd2_2440a)
Bi-directional pad, LVCMOS schmitt-trigger, open-drain, output
drive strenth ignore,
r50(phoar50_abb) Analog Output pad, 50Kohm resistor, Separated bulk-bias
t12s(phtot12cd_12_2440a)
output pad, LVCMOS , tri -state, output drive strenth control,
Io=6,8,10,12mA
nc(phnc) No connection pad