Memory Map Control (S12PMMCV1)
CPU
BDM
MMC
Address Decoder & Priority
Target Bus Controller
DBG
D-Flash
P-Flash
RAM
Peripherals
Figure 3-1. S12PMMC Block Diagram
3.2
External Signal Description
The S12PMMC uses two external pins to determine the devices operating mode: RESET and MODC
(Table 3-4) See Device User Guide (DUG) for the mapping of these signals to device pins.
Table 3-4. External System Pins Associated With S12PMMC
Pin Name
Pin Functions
Description
RESET
(See DUG)
RESET
The RESET pin is used the select the MCU’s operating mode.
MODC
(See DUG)
MODC
The MODC pin is captured at the rising edge of the RESET pin. The captured
value determines the MCU’s operating mode.
3.3
Memory Map and Registers
Module Memory Map
3.3.1
A summary of the registers associated with the S12PMMC block is shown in Figure 3-2. Detailed
descriptions of the registers and bits are given in the subsections that follow.
S12P-Family Reference Manual, Rev. 1.13
Freescale Semiconductor
109
FREESCALE [ Freescale ]
