str712 STMicroelectronics, str712 Datasheet - Page 44

• Manufacturer Part Number: str712
• Description: 144/64-pin Arm7tdmi Mcu With Up To 256kb Flash, 64kb Ram And Emi
• Manufacturer: STMicroelectronics

Electrical parameters
44/78
Figure 16. RTC crystal oscillator and resonator
PLL electrical characteristics
V
Table 21.
∆t
f
Symbol
33
PLLCLK1
f
t
LOCK1
FREE1
JITTER1
f
PLL1
= 3.0 to 3.6V, V
PLL multiplier output clock
PLL input clock
PLL input clock duty cycle
PLL free running frequency
PLL lock time
PLL jitter (peak to peak)
PLL1 characteristics
Parameter
33IOPLL
C
L
DEVICE
= 3.0 to 3.6V, T
R
S
C
FREF_RANGE = 0
FREF_RANGE = 1
MX[1:0]=’00’ or ‘01’
FREF_RANGE = 1
MX[1:0]=’10’ or ‘11’
FREF_RANGE = 0
MX[1:0]=’01’ or ‘11’
FREF_RANGE = 0
MX[1:0]=’00’ or ‘10’
FREF_RANGE = 1
MX[1:0]=’01’ or ‘11’
FREF_RANGE = 1
MX[1:0]=’00’ or ‘10’
FREF_RANGE = 0
Stable Input Clock
Stable V
FREF_RANGE = 1
Stable Input Clock
Stable V
t
Global Output division = 32
(Output Clock = 2 MHz)
L
PLL
Test conditions
= 4 MHz, MX[1:0]=’11’
A
= -40 / 85 °C unless otherwise specified.
33IOPLL
33IOPLL
, V
, V
18
18
DEVICE
Min
1.5
3.0
3.0
25
Value
Typ
125
250
250
500
0.7
Max
8.25
165
300
600
3.0
75
6
2
STR71xF
MHz
MHz
MHz
MHz
Unit
kHz
kHz
kHz
kHz
µs
µs
ns
%