参数资料
型号: UPD78F9221CS-CAC-A
厂商: Renesas Electronics America
文件页数: 52/125页
文件大小: 0K
描述: MCU 8BIT 2KB FLASH 20PIN
标准包装: 400
系列: 78K0S/Kx1+
核心处理器: 78K0S
芯体尺寸: 8-位
速度: 10MHz
连通性: LIN,UART/USART
外围设备: LVD,POR,PWM,WDT
输入/输出数: 15
程序存储器容量: 2KB(2K x 8)
程序存储器类型: 闪存
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 2 V ~ 5.5 V
数据转换器: A/D 4x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 20-DIP(0.300",7.62mm)
包装: 托盘
CHAPTER 3 CPU ARCHITECTURE
User’s Manual U16898EJ6V0UD
30
3.1.1 Internal program memory space
The internal program memory space stores programs and table data. This space is usually addressed by the
program counter (PC).
The 78K0S/KA1+ provides the following internal ROMs (or flash memory) containing the following capacities.
Table 3-1. Internal ROM Capacity
Internal ROM
Part Number
Structure
Capacity
μPD78F9221
2,048
× 8 bits
μPD78F9222
4,096
× 8 bits
μPD78F9224
Flash memory
8,192
× 8 bits
The following areas are allocated to the internal program memory space.
(1)
Vector table area
The 34-byte area of addresses 0000H to 0021H is reserved as a vector table area. This area stores program
start addresses to be used when branching by Reset or interrupt request generation.
Of a
16-bit address, the lower 8 bits are stored in an even address, and the higher 8 bits are stored in an odd
address.
Table 3-2. Vector Table
Vector Table Address
Interrupt Request
Vector Table Address
Interrupt Request
0000H
Reset
0012H
INTAD
0006H
INTLVI
0016H
INTP2
0008H
INTP0
0018H
INTP3
000AH
INP1
001AH
INTTM80
000CH
INTTMH1
001CH
INTSRE6
000EH
INTTM000
001EH
INTSR6
0010H
INTTM010
0020H
INTST6
Caution
No interrupt sources correspond to the vector table address 0014H.
(2)
CALLT instruction table area
The subroutine entry address of a 1-byte call instruction (CALLT) can be stored in the 64-byte area of
addresses 0040H to 007FH.
(3)
Option byte area
The option byte area is the 1-byte area of address 0080H. For details, refer to CHAPTER 17 OPTION
BYTE.
(4)
Protect byte area
The protect byte area is the 1-byte area of address 0081H. For details, refer to CHAPTER 18 FLASH
MEMORY.
<R>
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