MC68HC908RF2CFA Freescale Semiconductor, MC68HC908RF2CFA Datasheet - Page 125

• Manufacturer Part Number: MC68HC908RF2CFA
• Description: IC MCU W/UHF TX 2K FLASH 32LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908RF2CFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: LVD, POR, PWM, RF Mod
• Number Of I /o: 12
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

10.6.2 Stop Mode
MC68HC908RF2 — Rev. 4.0
MOTOROLA
NOTE:
In stop mode, the SIM counter is reset and the system clocks are disabled. An
interrupt request from a module can cause an exit from stop mode. Stacking for
interrupts begins after the selected stop recovery time has elapsed. Reset or break
also causes an exit from stop mode.
The SIM disables the clock generator module outputs (CGMOUT and CGMXCLK)
in stop mode, stopping the CPU and peripherals. Stop recovery time is selectable
using the SSREC bit in the CONFIG register. If SSREC is set, stop recovery is
reduced from the normal delay of 4096 CGMXCLK cycles down to 32. This is ideal
for applications using canned oscillators that do not require long startup times from
stop mode.
External crystal applications should use the full stop recovery time by clearing the
SSREC bit.
A break interrupt during stop mode sets the SIM break stop/wait bit (SBSW) in the
SIM break status register (SBSR).
The SIM counter is held in reset from the execution of the STOP instruction until the
beginning of stop recovery. It is then used to time the recovery period.
10-15
CGMXCLK
CPUSTOP
Note: Previous data can be operand data or the STOP opcode, depending on the last instruction.
shows stop mode entry timing.
Freescale Semiconductor, Inc.
RST
IDB
IAB
R/W
For More Information On This Product,
IDB
IAB
$A6
Figure 10-14. Wait Recovery from Internal Reset
System Integration Module (SIM)
Go to: www.freescale.com
STOP ADDR
$6E0B
$A6
Figure 10-15. Stop Mode Entry Timing
PREVIOUS DATA
$A6
STOP ADDR + 1
CYCLES
32
NEXT OPCODE
CYCLES
32
SAME
System Integration Module (SIM)
RST VCT H
SAME
Low-Power Modes
RST VCT L
SAME
Figure
SAME
Data Sheet
125