MC56F8037EVM Freescale Semiconductor, MC56F8037EVM Datasheet - Page 126

• Manufacturer Part Number: MC56F8037EVM
• Description: BOARD EVAL FOR MC56F8037
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of MC56F8037EVM

• Contents: Board, Cables, CD, Debugger
• Silicon Manufacturer: Freescale
• Core Architecture: 56800/E
• Core Sub-architecture: 56800/E
• Silicon Core Number: MC56F
• Silicon Family Name: MC56F80xx
• Kit Contents: MC56F8037EVM, USB-JTAG Adapter, Cables, CD
• Rohs Compliant: Yes
• For Use With/related Products: MC56F8037
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

possible to invoke Stop or Wait mode while in Standby mode for even greater levels of power reduction.
A 400kHz external clock can optionally be used in Standby mode to produce the required Standby 200kHz
system clock rate. Power-down mode, which selects the ROSC clock source but shuts it off, fully disables
the device and minimizes its power utilization but is only recoverable via reset.
When the PLL is not selected and the system bus is operating at 200kHz or less, the large regulator can be
put into its Standby mode (LRSTDBY) to reduce the power utilization of that regulator.
All peripherals, except the COP/watchdog timer, run at the system clock frequency or optional 3X system
clock for PWM, Timers, and I
operation is 32MHz.
6.6 Resets
The SIM supports five sources of reset, as shown in
external reset pin and the Power-On Reset (POR). The three synchronous sources are the software reset
(SW reset), which is generated within the SIM itself by writing the SIM_CTRL register in
the COP time-out reset (COP_TOR), and the COP loss-of-reference reset (COP_LOR). The reset
generation module has three reset detectors, which resolve into four primary resets. These are outlined in
Table
Figure 6-28
use the OSC_CLK as their time base, since other system clocks are inactive during this phase of reset.
126
EXTENDED_POR
CLKGEN_RST
PERIP_RST
CORE_RST
Reset Signal
6-3. The JTAG circuitry is reset by the Power-On Reset.
provides a graphic illustration of the details in
POR
X
X
X
X
2
C. The COP timer runs at OSC_CLK / 1024. The maximum frequency of
External
Table 6-3 Primary System Resets
Reset Sources
X
X
X
56F8037/56F8027 Data Sheet, Rev. 7
Software
X
X
X
Figure
COP
X
X
X
Table
6-28. The two asynchronous sources are the
Stretched version of POR released 64
OSC_CLK cycles after POR deasserts
Released 32 OSC_CLK cycles after all reset
sources, including EXTENDED_POR, have
released
Releases 32 SYS_CLK cycles after the
CLKGEN_RST is released
Releases 32 SYS_CLK cycles after
PERIP_RST is released
6-3. Note that the POR_Delay blocks
Comments
Freescale Semiconductor
Section
6.3.1,