EP7209 Datasheet, PDF (94/128 Pages) Cirrus Logic – Ultra-Low-Power Audio Decoder System-on-Chip

EP7209
Symbol
Parameter
Min
COUT Output capacitance
8
CI/O
Transceiver capacitance
8
Startup current consumption
IDD_startup
Standby current consumption
IDD_standby
IDD_idle
Idle current consumption
At 13 MHz
At 18 MHz
At 36 MHz
IDD_operating
Operating current consump-
tion
At 13 MHz
At 18 MHz
At 36 MHz
At 49 MHz
At 74 MHz
Standby supply voltage
V_DDstandby
TBD
Max
10
10
4
4.2
6
12
14
20
40
50
68
Unit
Conditions
pF
pF
Initial 100 ms from power up,
32 kHz oscillator not stable,
µA POR signal at VIL, all other
I/O static, VIH = V_DD ± 0.1 V,
VIL = GND ± 0.1 V
Just 32 kHz oscillator running,
µA all other I/O static, VIH = V_DD
± 0.1 V, VIL = GND ± 0.1 V
Both oscillators running, CPU
static, LCD refresh active, VIH
mA _{= VDD ± 0.1 V, VIL = GND ±}
0.1 V
All system active, running typ-
ical program
mA
Minimum standby voltage for
V state retention and RTC oper-
ation only
NOTE:
All power dissipation values can be derived from taking the particular IDD current and multiplying by
2.5 V.
The RTC of the EP7209 should be brought up at room temperature. This is required because the RTC
OSC will NOT function properly if it is brought up at –40°C. Once operational, it will continue to operate
down to –40°C.
A typical design will provide 3.3 V to the I/O supply (i.e., VDDIO), and 2.5 V to the remaining logic. This
is to allow the I/O to be compatible with 3.3 V powered external logic (i.e., 3.3 V DRAMs).
Pull-up current = 50 µA typical at V_DD = 3.3 volts.
Table 54. DC Characteristics (cont.)
94
DS453PP2