HERCULES
Issue 1
Section 7
MCUK001001G8
Revision 0
– 28 –
Technical Guide
7.4. Memory Interface
The memory interface allows the 32-bit CPU access to 16 and 8-bit devices, and allows the addition of wait states to memory
access. The memory interface allows between 0 and 31 wait states to be added. The ROM area is hardware write-protected,
a FLASH write enable bit in the ROM wait state configuration register can be used to enable write access to the ROM area.
CPU Memory Map
Device Name
Start Address
Size
Function
Bus width
Wait States
ROM
0000:0000
8M
FLASH 2M bytes
16 bits
0
nCS1
0080:0000
8M
Static RAM 256k bytes *
16 bits
0
nCS2
0100:0000
8M
not used
16 bits
0
nCS3
0180:0000
8M
Extended FLASH 128 Kbytes
-
-
nCS4
0280:0000
8M
not used
-
-
Internal RAM
0300:0000
256k
Internal RAM 256k byte
32 bits
0
API RAM
FFD0:0000
4k
CPU/DSP shared RAM
16 bits
0
API Control
FFE0:0000
2k
CPU/DSP interface controller
16 bits
0
SIM
FFFE:0000
2k
SIM interface
16 bits
0
TSP
FFFE:0800
2k
Timed Serial Port
16 bits
0
TPU (REG)
FFFE:1000
1k
GSM time registers
16 bits
0
TPU (RAM)
FFFE:1400
1k
GSM timing unit
16 bits
0
RTC
FFFE:1800
2k
Real Time Clock
8 bits
0
ULPD
FFFE:2000
2k
Ultra Low-Power controller
16 bits
0
I2C
FFFE:2800
2k
I2C master serial
16 bits
0
SPI
FFFE:3000
2k
Serial port interface
16 bits
0
TIMER
FFFE:3800
2k
Software Timer 1
16 bits
0
UWIRE
FFFE:4000
2k
Synchronous Serial port
16 bits
0
ARMIO
FFFE:4800
2k
Keypad, buzzer, LCD & I/O
16 bits
0
TIMER2
FFFE:6800
2k
Software Timer 2
16 bits
0
LPG
FFFE:7800
2k
Light Pulse Generator
8 bits
0
PWL
FFFE:8000
2k
Pulse Width Light
8 bits
0
PWT
FFFE:8800
2k
Pulse Width Tones
8 bits
0
UART IRDA
FFFF:5000
2k
UART
8 bits
0
UART MODEM
FFFF:5800
2k
CPU/DSP shared RAM
8 bits
0
UART MODEM
FFFF:6000
2k
CPU/DSP interface controller
8 bits
0
RIF
FFFF:70000
2k
RF Interface
16 bits
0
WDT
FFFF:F800
256
Watchdog Timer
16 bits
0
INTH
FFFF:FA00
256
Interrupt Handler
16 bits
0
Memory IF
FFFF:FB00
256
Memory Interface
16 bits
0
DMA
FFFF:FC00
256
DMA Controller
16 bits
0
CLKM
FFFF:FD00
256
Clock Manager
16 bits
0
Summary of Contents for EB-GD93
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