ADE7166ASTZF8 Analog Devices Inc, ADE7166ASTZF8 Datasheet - Page 86

• Manufacturer Part Number: ADE7166ASTZF8
• Description: IC ENERGY METER 1PHASE 64LQFP
• Manufacturer: Analog Devices Inc

Specifications of ADE7166ASTZF8

• Applications: Energy Measurement
• Core Processor: 8052
• Program Memory Type: FLASH (8 kB)
• Controller Series: ADE71xx
• Ram Size: 512 x 8
• Interface: I²C, SPI, UART
• Number Of I /o: 20
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Ic Function: Single Phase Energy Measurement IC
• Supply Voltage Range: 3.13V To 3.46V, 2.4V To 3.7V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: LQFP
• No. Of Pins: 64
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/ADE7569
Address 0x80 through Address 0xFF of general-purpose RAM
are shared with the SFRs. The mode of addressing determines
which memory space is accessed, as shown in Figure 84.
Both direct and indirect addressing can be used to access general-
purpose RAM from 0x00 through 0x7F, but indirect addressing
must be used to access general-purpose RAM with addresses in
the range from 0x80 through 0xFF because they share the same
address space with the SFRs.
The 8052 core also has the means to access individual bits of
certain addresses in the general-purpose RAM and special
function memory spaces. The individual bits of general-purpose
RAM, Address 0x20 to Address 0x2F, can be accessed through
Bit Address 0x00 to Bit Address 0x7F. The benefit of bit
addressing is that the individual bits can be accessed quickly,
without the need for bit masking, which takes more code memory
and execution time. The bit addresses for general-purpose RAM
Address 0x20 through Address 0x2F can be seen in Figure 85.
Bit addressing can be used for instructions that involve Boolean
variable manipulation and program branching (see the
Instruction Set section).
Figure 84. General-Purpose RAM and SFR Memory Address Overlap
0xFF
0x7F
0x80
0x00
Figure 85. Bit Addressable Area of General-Purpose RAM
ADDRESS
0x2E
0x2D
0x2C
0x2B
0x2A
0x2F
0x29
0x28
0x27
0x26
0x25
0x24
0x23
0x22
0x21
0x20
INDIRECT ADDRESSING
BYTE
DIRECT AND INDIRECT
ACCESSIBLE BY
ACCESSIBLE BY
GENERAL-PURPOSE RAM
SPECIAL FUNCTION REGISTERS (SFRs)
ADDRESSING
7F
6F
5F
4F
3F
2F
1F
0F
77
67
57
47
37
27
17
07
ONLY
7E
6E
5E
4E
3E
2E
1E
0E
76
66
56
46
36
26
16
06
BIT ADDRESSES (HEXA)
7D
6D
5D
4D
3D
2D
1D
0D
75
65
55
45
35
25
15
05
7C
6C
5C
4C
3C
2C
1C
0C
74
64
54
44
34
24
14
04
DIRECT ADDRESSING
7B
6B
5B
4B
3B
2B
1B
0B
73
63
53
43
33
23
13
03
ACCESSIBLE BY
7A
6A
5A
4A
3A
2A
1A
0A
72
62
52
42
32
22
12
02
ONLY
79
71
69
61
59
51
49
41
39
31
29
21
19
11
09
01
78
70
68
60
58
50
48
40
38
30
28
20
18
10
08
00
Rev. B | Page 86 of 152
Special Function Registers (SFRs)
Special function registers are registers that affect the function of
the 8052 core or its peripherals. These registers are located in
RAM at Address 0x80 through Address 0xFF. They are accessible
only through direct addressing as shown in Figure 84.
The individual bits of some of the SFRs can be accessed for use
in Boolean and program branching instructions. These SFRs are
labeled as bit-addressable and the bit addresses are given in
Table 15.
Extended Internal RAM (XRAM)
The ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/
ADE7569 provide 256 bytes of extended on-chip RAM. No
external RAM is supported. This RAM is located in Address
0x00 through Address 0xFF in the extended RAM space. To
select the extended RAM memory space, the extended indirect
addressing modes are used.
Code Memory
Code and data memory is stored in the 16 kB flash memory
space. No external code memory is supported. To access code
memory, code indirect addressing is used.
ADDRESSING MODES
The 8052 core provides several addressing modes. The
addressing mode determines how the core interprets the
memory location or data value specified in assembly language
code. There are six addressing modes, as shown in Table 64.
Table 64. 8052 Addressing Modes
Addressing Mode
Immediate
Direct
Indirect
Extended Direct
Extended Indirect
Code Indirect
Figure 86. Extended Internal RAM (XRAM) Space
0x00FF
0x0000
Example
MOV A,#A8h
MOV DPTR,#A8h
MOV A, A8h
MOV A, IE
MOV A, R0
MOV A, @R0
MOVX A, @DPTR
MOVX A, @R0
MOVC A, @A+DPTR
MOVC A, @A+PC
JMP @A+ DPTR
EXTENDED INTERNAL
256 BYTES OF
RAM (XRAM)
Bytes
2
3
2
2
1
1
1
1
1
1
1
Core Clock
Cycles
2
3
2
2
1
2
4
4
4
4
3