参数资料
型号: PIC12C509A-04E/SM
厂商: Microchip Technology
文件页数: 19/113页
文件大小: 0K
描述: IC MCU OTP 1KX12 8-SOIJ
产品培训模块: Asynchronous Stimulus
标准包装: 90
系列: PIC® 12C
核心处理器: PIC
芯体尺寸: 8-位
速度: 4MHz
外围设备: POR,WDT
输入/输出数: 5
程序存储器容量: 1.5KB(1K x 12)
程序存储器类型: OTP
RAM 容量: 41 x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 125°C
封装/外壳: 8-SOIC(0.209",5.30mm 宽)
包装: 管件
配用: XLT08SO-1-ND - SOCKET TRANSITION 8SOIC 150/208
AC164312-ND - MODULE SKT FOR PM3 16SOIC
309-1048-ND - ADAPTER 8-SOIC TO 8-DIP
309-1047-ND - ADAPTER 8-SOIC TO 8-DIP
1999 Microchip Technology Inc.
DS40139E-page 13
PIC12C5XX
4.0
MEMORY ORGANIZATION
PIC12C5XX memory is organized into program mem-
ory and data memory. For devices with more than 512
bytes of program memory, a paging scheme is used.
Program memory pages are accessed using one STA-
TUS register bit. For the PIC12C509, PIC12C509A,
PICCR509A and PIC12CE519 with a data memory
register file of more than 32 registers, a banking
scheme is used. Data memory banks are accessed
using the File Select Register (FSR).
4.1
Program Memory Organization
The PIC12C5XX devices have a 12-bit Program
Counter (PC) capable of addressing a 2K x 12
program memory space.
Only the first 512 x 12 (0000h-01FFh) for the
PIC12C508, PIC12C508A and PIC12CE518 and 1K x
12 (0000h-03FFh) for the PIC12C509, PIC12C509A,
PIC12CR509A,
and
PIC12CE519
are
physically
implemented.
Refer
to
Accessing
a
location above these boundaries will cause a wrap-
around within the first 512 x 12 space (PIC12C508,
PIC12C508A and PIC12CE518) or 1K x 12 space
(PIC12C509,
PIC12C509A,
PIC12CR509A
and
PIC12CE519). The effective reset vector is at 000h,
(see
Location
01FFh
(PIC12C508,
PIC12C508A and PIC12CE518) or location 03FFh
(PIC12C509,
PIC12C509A,
PIC12CR509A
and
PIC12CE519)
contains the internal clock oscillator
calibration
value.
This
value
should
never
be
overwritten.
FIGURE 4-1:
PROGRAM MEMORY MAP
AND STACK
CALL, RETLW
PC<11:0>
Stack Level 1
Stack Level 2
U
s
er
Me
mo
ry
Sp
ace
12
0000h
7FFh
01FFh
0200h
On-chip Program
Memory
Reset Vector (note 1)
Note 1: Address 0000h becomes the
effective reset vector. Location
01FFh (PIC12C508, PIC12C508A,
PIC12CE518) or location 03FFh
(PIC12C509, PIC12C509A,
PIC12CR509A, PIC12CE519) con-
tains the MOVLW XX INTERNAL RC
oscillator calibration value.
512 Word
1024 Word
03FFh
0400h
On-chip Program
Memory
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