SAA1575HL Datasheet, PDF (30/56 Pages) NXP Semiconductors – Global Positioning System GPS baseband processor

Philips Semiconductors
Global Positioning System (GPS)
baseband processor
Product specification
SAA1575HL
11 AC CHARACTERISTICS
V_CC(P) = V_CC(B) = 5 V; V_CC(core) = V_CC(R) = 3 V; T_amb = 20 °C; f_osc = 30 MHz; standard Philips firmware (release HD00);
unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
External clock
f_osc
T_clk
t_CLKH
t_CLKL
t_r(clk)
t_f(clk)
f_clk(ref)
oscillator frequency
clock period and CPU timing cycle
clock HIGH time
clock LOW time
clock rise time
clock fall time
reference clock frequency
26
−
40 to 60% duty cycle −
40 to 60% duty cycle −
−
−
−
External program memory read (non-burst code read); see Fig.16
t_AVAU
t_AVPL
t_W(PMCS)
t_PLIV
t_h(I)
t_AVIV
t_su(I)
address valid time period
address valid to PMCS asserted
PMCS pulse width
PMCS LOW to instruction valid
instruction hold time after PMCS de-asserted
address valid to instruction valid (access time)
instruction set-up time before PMCS
de-asserted
163.7
62.7
97.0
−
0.0
−
14.0
t_PXIZ
bus 3-state after PMCS de-asserted
−
t_h
hold time of a (3 : 1) after PMCS de-asserted
0.0
External program memory read (burst code read); see Figs 16 and 17
t_AVAU
t_AVIV
t_IVAU
t_AUIU
address valid time period
address valid to instruction valid (access time)
instruction valid to address undefined
address valid to instruction undefined
131.3
−
15.0
0.0
External data memory read; see Fig.18
t_AVAU
t_RLEL
t_W(DMCS)
t_RHEH
t_AVRL
t_W(RD)
t_AVDV
t_RLDV
t_su(D)
t_h(D)
t_RHDZ
address valid time period
RD asserted to DMCS asserted
DMCS pulse width
RD de-asserted to DMCS de-asserted
address valid to RD asserted
RD pulse width
address valid to data valid (access time)
RD asserted to data valid
data set-up time before RD de-asserted
data hold time after RD de-asserted
bus 3-state after RD de-asserted
note 1
163.7
−
97.0
−
64.7
98.0
−
−
15.0
0.0
−
30
33.3
6.7
6.7
5
5
14.4
165.7
65.7
98.0
82.0
−
148.7
16.0
30.0
1.0
132.3
115.3
17.0
−
164.7
2.0
98.0
2.0
65.7
−
148.7
82.0
16.0
−
30.0
32
−
−
−
−
−
35
−
−
−
85.0
−
151.7
−
36.0
−
−
118.3
−
−
−
4.0
−
6.0
−
−
151.7
85.0
−
−
36.0
MHz
ns
ns
ns
ns
ns
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
1999 Jun 04
30