Freescale Semiconductor MC9S12ZVHL32, Reference Manual

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Appendix A MCU Electrical Specifications
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
Freescale Semiconductor 785
A.1.9 Supply Currents
This section describes the current consumption characteristics of the device as well as the conditions for
the measurements.
A.1.9.1 Measurement Conditions
Current is measured on VSUP. 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 32MHz and the CPU frequency is 64MHz.
Table A-
10 , Table A-11 and Table A-12 show the configuration of the CPMU module and the peripherals for Run,
Wait and Stop current measurement.
Table A-10. CPMU Configuration for Pseudo Stop Current Measurement
CPMU REGISTER Bit settings/Conditions
CPMUCLKS PLLSEL=0, PSTP=1, CSAD=0,
PRE=PCE=RTIOSCSEL=COPOSCSEL=1
CPMUOSC OSCE=1, External Square wave on EXTAL f
EXTAL
=4MHz,
V
IH
= 1.8V, V
IL
=0V
CPMURTI RTDEC=0, RTR[6:4]=111, RTR[3:0]=1111;
CPMUCOP WCOP=1, CR[2:0]=111
Table A-11. CPMU Configuration for Run/Wait and Full Stop Current Measurement
CPMU REGISTER Bit settings/Conditions
CPMUSYNR VCOFRQ[1:0]=01,SYNDIV[5:0] = 31
CPMUPOSTDIV POSTDIV[4:0]=0
CPMUCLKS PLLSEL=1, CSAD=0
CPMUOSC OSCE=0,
Reference clock for PLL is f
ref
=f
irc1m
trimmed to 1MHz
API settings for STOP current measurement
CPMUAPICTL APIEA=0, APIFE=1, APIE=0
CPMUAPITR trimmed to >=10Khz
CPMUAPIRH/RL set to 0xFFFF