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參數(shù)資料
| 型號： | Z86K16 |
| 廠商： | ZiLOG, Inc. |
| 英文描述： | CMOS Z8 8-Bit MCU Keyboard Controllers |
| 中文描述： | Z8的CMOS 8位微控制器鍵盤控制器 |
| 文件頁數(shù)： | 13/24頁 |
| 文件大?。?/td> | 170K |
| 代理商： | Z86K16 |
Z86K13/K14/K15/K16/K17/K18
CMOS Z8 8-Bit MCU Keyboard Controllers
Zilog
DS97KEY0204
P R E L I M I N A R Y
13
1
Program Memory.
The 16-bit program counter addresses
4 KB of program memory space at internal locations (Fig-
ure 11).
The first 12 bytes of program memory are reserved for the
interrupt vectors. These locations have six 16-bit vectors
that correspond to the five available interrupts.
Byte 12 to byte 4095* consists of on-chip, mask pro-
grammed ROM. Addresses 4096* and greater are re-
served. (*2048 for K13/K16, 3072 for K14/K17)
Register File
. The register file (Figure 13) consists of four
I/O port registers, 188 general-purpose registers (exclud-
ing P00-P03), and 11 control and status registers (R3-R0,
R191-R4, and R255-R240, respectively). The instructions
can access registers directly or indirectly through an 8-bit
address field. This allows short, 4-bit register addressing
using the Register Pointer. In the 4-bit mode, the register
file is divided into nine working-register groups, each occu-
pying 16 continuous locations. The Register Pointer ad-
dresses the starting location of the active working-register
group.
Figure 11. Program Memory Map
Figure 12. Register Pointer Register
12
11
10
9
8
7
6
5
4
3
2
1
0
On-Chip
ROM
Location of
First Byte of
Instruction
Executed
After RESET
Interrupt
Vector
(Lower Byte)
Interrupt
Vector
(Upper Byte)
Reserved
IRQ4
IRQ4
IRQ3
IRQ3
IRQ2
IRQ2
IRQ1
IRQ1
IRQ0
IRQ0
Reserved
65535
2048/3072/4096
2047/3071/4095
Reserved
D7 D6 D5 D4 D3 D2 D1 D0
R253 RP
Reserved
Working Register
Group
Default setting after RESET = 00000000
Figure 13. Register File Configuration
Stack Pointer (Bits 7-0)
R25
5
Reserved
Register Pointer
Program Control Flags
Interrupt Mask Register
Interrupt Request Register
Interrupt Priority Register
Reserved
Port 3 Mode
Port 2 Mode
T0 Prescaler
Timer/Counter0
Reserved
Reserved
Timer Mode
Reserved
Not Implemented
General-Purpose
Registers
Port 3
Port 2
Port 1
Port 0
R25
4
R253
R252
R251
R250
R249
R248
R247
R246
R245
R244
R243
R242
R241
R240
R 191
R3
R2
R1
R0
SPL
RP
FLAGS
IMR
IRQ
IPR
P3M
P2M
PREQ
T0
TMR
P3
P2
P1
P0
R4
LOCATION
IDENTIFIERS
Note:* Will not be reset with a STOP Mode Recovery.
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| Z86K17 | 制造商:ZILOG 制造商全稱:ZILOG 功能描述:CMOS Z8 8-Bit MCU Keyboard Controllers |
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