mc9s12vr48 Freescale Semiconductor, Inc, mc9s12vr48 Datasheet - Page 520

• Manufacturer Part Number: mc9s12vr48
• Description: S12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MCU Electrical Specifications
A.1.9
This section describes the current consumption characteristics of the device as well as the conditions for
the measurements.
A.1.9.1
Current is measured on VSUP & VSUPHS pins. VDDX is connected to VDDA. It does not include the
current to drive external loads. Unless otherwise noted the currents are measured in special single chip
mode and the CPU code is executed from RAM. For Run and Wait current measurements PLL is on and
the reference clock is the IRC1M trimmed to 1MHz. The bus frequency is 25MHz and the CPU frequency
is 50MHz.
peripherals for Run, Wait and Stop current measurement.
520
1
2
Maximum leakage current occurs at maximum operating temperature. Current decreases by approximately one-half for each
8°C to 12 C ° in the temperature range from 50°C to 125°C.
Refer to
Section A.1.3, “Current Injection”
Table
Supply Currents
Table A-10. CPMU Configuration for Run/Wait and Full Stop Current Measurement
Measurement Conditions
CPMU REGISTER
CPMU REGISTER
CPMUPOSTDIV
A-9,
CPMUSYNR
Table A-9. CPMU Configuration for Pseudo Stop Current Measurement
CPMUCLKS
CPMUCLKS
CPMUOSC
CPMUCOP
CPMUOSC
CPMURTI
Table A-10
API settings for STOP current measurement
MC9S12VR Family Reference Manual,
Preliminary - Subject to Change Without Notice
and
PLLSEL=0, PSTP=1, CSAD=0
PRE=PCE=RTIOSCSEL=COPOSCSEL=1
OSCE=1, External Square wave on EXTAL f
V
RTDEC=0, RTR[6:4]=111, RTR[3:0]=1111;
WCOP=1, CR[2:0]=111
VCOFRQ[1:0]=01,SYNDIV[5:0] = 23
POSTDIV[4:0]=0
PLLSEL=1
OSCE=0,
Reference clock for PLL is f
IH
for more details
= 1.8V, V
Table A-11
IL
=0V
show the configuration of the CPMU module and the
Bit settings/Conditions
Bit settings/Conditions
ref
=f
irc1m
Rev. 2.2
trimmed to 1MHz
EXTAL
=4MHz,
Freescale Semiconductor