LH7A404N0F092B3 NXP Semiconductors, LH7A404N0F092B3 Datasheet - Page 63

• Manufacturer Part Number: LH7A404N0F092B3
• Description: Microcontrollers (MCU) LCD USB FS/HOST MMU LFBGA324
• Manufacturer: NXP Semiconductors

Specifications of LH7A404N0F092B3

• Data Bus Width: 32 bit
• Program Memory Type: ROMLess
• Data Ram Size: 80 KB
• Interface Type: AC97, EBI, IrDA, Microwire, SPI, SSI, SSP, UART, USB
• Maximum Clock Frequency: 266 MHz
• Number Of Programmable I/os: 64
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: LFBGA
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 9 Channel
• Lead Free Status / Rohs Status: Details
• Other names: LH7A404N0F092B3;55

32-Bit System-on-Chip
Clock and State Controller
(CSC) Waveforms
coming out of Reset or Power-On. Table 13 gives the
timing parameters.
32.768 kHz oscillator is stable, and must be deasserted
at least two 1 Hz clock periods before the WAKEUP
signal is asserted. Once the 14.7456 MHz oscillator is
stable, the PLLs require 250 µs to lock.
Boot), the Wakeup pin must not be asserted for two 1
NOTE: *VDDC = VDDCmin
NOTE: *The timing relationship is specified as a cycle-based timing. Due to variations in crystal input clock jitter,
Preliminary data sheet
tOSC32 (32 kHz)
tOSC14 (14 MHz)
Figure 48 shows the behavior of the LH7A404 when
At Power-On, nPOR must be held LOW until the
On transition from Standby to Run (including a Cold
PARAMETER
power rail noise and I/O conditioning these timings will vary marginally. It is recommended that designers
WAKEUP
XTAL32
XTAL14
VDDC
nPOR
VDDCmin
32.768 kHz Oscillator Stabilization Time after Power On*
14.7456 MHz Oscillator Stabilization Time after WAKEUP
tOSC32
DESCRIPTION
Table 13. Reset AC Timing
Figure 48. PLL Start-up
NXP Semiconductors
tOSC14
Hz clock periods after assertion of nPOR to allow time
for sampling BATOK and nEXTPWR. The delay
prevents a false ‘battery good’ indication caused by
alkaline battery recovery that can immediately follow a
battery-low switch off.
nRESETOUT Timing Sequence
each of the three reset triggers (nPOR, nURESET, and
nPWRFL) in Figure 49 through Figure 51, and timing
values are presented in Table 14 through Table 16.
Timing for the nRESETOUT sequence is shown for
MIN. MAX.
550
2.5
UNIT
ms
ms
LH7A404
LH7A404-22
63