z86e02sl1925 ZiLOG Semiconductor, z86e02sl1925 Datasheet - Page 36

• Manufacturer Part Number: z86e02sl1925
• Description: General-purpose Otp Mcu With 14 I/o Lines
• Manufacturer: ZiLOG Semiconductor

PS014802-0903
Program Memory
Register File
The Z86E02 SL1925 addresses up to 512B of internal program memory
(Figure 13). The first 12 bytes of program memory are reserved for the interrupt
vectors. These locations contain six 16-bit vectors that correspond to the six avail-
able interrupts. Bytes 0–511 are on-chip one-time programmable EPROM.
The Register File consists of three I/O port registers, 61 general-purpose regis-
ters, and 14 control and status registers R0, R2-R3, R4–R63, R254 and R241–
R253, and R255, respectively (Figure 14). General-purpose registers occupy the
04h to 3Fh address space. I/O ports are mapped as per the existing CMOS Z8.
(Upper Byte)
After RESET
(Lower Byte)
First Byte of
Location of
Instruction
Figure 13. Program Memory Map
Executed
Interrupt
Interrupt
Vector
Vector
511
12
11
10
9
8
7
6
5
4
3
2
1
0
General-Purpose OTP MCU with 14 I/O Lines
On-Chip
IRQ5
IRQ5
IRQ4
IRQ4
IRQ3
IRQ3
IRQ2
IRQ2
IRQ1
IRQ1
IRQ0
IRQ0
ROM
Z86E02 SL 1925
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