参数资料
型号: MC68HC05SB7
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封装: MO-150, SSOP-28
文件页数: 85/170页
文件大小: 2161K
代理商: MC68HC05SB7
August 27, 1998
GENERAL RELEASE SPECIFICATION
MC68HC05SB7
MEMORY
MOTOROLA
REV 2.1
2-1
SECTION 2
MEMORY
This section describes the organization of the MC68HC05SB7 on-chip memory.
2.1
MEMORY MAP
In Normal operating mode, the 48 bytes of I/O, 224 bytes of user RAM and 6144
bytes of user ROM are all active as shown in Figure 2-1. The ROM portion of
memory holds the program instructions, xed data, user dened vectors, and
interrupt service routines. The RAM portion of memory holds variable data. I/O
registers are memory mapped so that the CPU can access their locations in the
same way that it accesses all other memory locations.
$0000
I/O REGISTERS
48 BYTES
$002F
$0030
UNIMPLEMENTED
16 BYTES
$003F
$0040
USER RAM
224 BYTES
STACK RAM
64 BYTES
$00C0
$011F
$00FF
$0120
UNIMPLEMENTED
1248 BYTES
$05FF
$0600
USER ROM
6144 BYTES
$1DFF
$1E00
INTERNAL TEST ROM
496 BYTES
$1FEF
$1FF0
USER VECTORS
16 BYTES
$1FFF
Figure 2-1. MC68HC05SB7 Memory Map
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