MSP430x31x
MIXED SIGNAL MICROCONTROLLERS
SLAS165D FEBRUARY 1998 REVISED APRIL 2000
18
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted) (continued)
optional resistors, individually programmable with ROM code, P0.x, (see Note 10)
PARAMETER
TEST CONDITIONS
MIN
NOM
MAX
UNIT
R(opt1)
VCC = 3 V/5 V
2.1
4.1
6.2
k
Ω
R(opt2)
VCC = 3 V/5 V
3.1
6.2
9.3
k
Ω
R(opt3)
VCC = 3 V/5 V
6
12
18
k
Ω
R(opt4)
VCC = 3 V/5 V
10
19
29
k
Ω
R(opt5)
Resistors, individually programmable with ROM code, all port pins,
VCC = 3 V/5 V
19
37
56
k
Ω
R(opt6)
Resistors, individually programmable with ROM code, all port pins,
values applicable for pulldown and pullup
VCC = 3 V/5 V
38
75
113
k
Ω
R(opt7)
VCC = 3 V/5 V
56
112
168
k
Ω
R(opt8)
VCC = 3 V/5 V
94
187
281
k
Ω
R(opt9)
VCC = 3 V/5 V
131
261
392
k
Ω
R(opt10)
VCC = 3 V/5 V
167
337
506
k
Ω
NOTE 10: Optional resistors Roptx for pull-down or pull-up are not programmed in standard OTP/EPROM devices P/E313 (MSP430P313/E313
not recommended for new designs replaced by MSP430P315/E315) and P/E315(s)
inputs P0.x, CIN, TP.5; output XBUF
PARAMETER
TEST CONDITIONS
VCC
MIN
NOM
MAX
UNIT
t(int)
External interrupt timing
Port P0
External trigger signal for the
interrupt flag, (see Notes 11 and 12)
3 V/5 V
1.5
cycle
f(IN)
Input frequency
3 V/5 V
DC
f(system)
MHz
3 V/5 V
DC
f(system)
MHz
t(H) or t(L)
High level or low level time
P0.x, CIN, TP.5
3 V
225
ns
t(H) or t(L)
High level or low level time
5 V
150
ns
f(XBUF)
Clock output frequency
XBUF, CL = 20 pF
3 V/5 V
f(system)
MHz
XBUF, CL = 20 pF,
t
Duty cycle of clock output frequency
f(MCLK)= 1.1 MHz
3V/5V
40%
t(Xdc)
Duty cycle of clock output frequency
f(XBUF) = f(ACLK)
3V/5V
35%
60%
f(XBUF) = f(ACLK/n)
3V/5V
50%
65%
NOTES: 11. The external signal sets the interrupt flag every time tint is met. It may be set even with trigger signals shorter than tint. The conditions
to set the flag must be met independently from this timing constraint. Tint is defined in MCLK cycles.
12. The external interrupt signal cannot exceed the maximum inut frequency (f(in)).
crystal oscillator, Xin, Xout
PARAMETER
TEST CONDITIONS
MIN
NOM
MAX
UNIT
C(Xin)
Integrated capacitance at input
VCC = 3 V/5 V
12
pF
C(Xout)
Integrated capacitance at output
VCC = 3 V/5 V
12
pF