ade7518 Analog Devices, Inc., ade7518 Datasheet - Page 64

• Manufacturer Part Number: ade7518
• Description: Single-phase Energy Measurement Ic With 8052 Mcu, Rtc, And Lcd Driver
• Manufacturer: Analog Devices, Inc.

ADE7518
Table 47. Program Control SFR (PCON, 0x87)
Bit
7
6 to 0
Table 48. Data Pointer Low SFR (DPL, 0x82)
Bit
7 to 0
Table 49. Data Pointer High SFR (DPH, 0x83)
Bit
7 to 0
Table 52. Configuration SFR (CFG, 0xAF)
Bit
7
6
5
4
3 to 2
1 to 0
Default
0
Default
0
Mnemonic
Reserved
EXTEN
SCPS
MOD38EN
Reserved
XREN1,
XREN0
Default
0
0
Description
Contain the high byte of the data pointer.
Description
Contain the low byte of the data pointer.
Description
SMOD Bit. Double baud rate control.
Reserved. Should be left cleared.
This bit should be left set for proper operation.
Enhanced UART Enable Bit.
Synchronous Communication Selection Bit.
38 kHz Modulation Enable Bit.
Description
EXTEN
0
1
SCPS
0
1
MOD38EN
0
1
XRENx
XREN1 OR XREN0 = 1
XREN1 AND XREN0 = 0
Result
Standard 8052 UART without enhanced error-checking features.
Enhanced UART with enhanced error checking (see the UART Additional Features section).
Result
I
SPI port is selected for control of the shared I
Result
38 kHz modulation is disabled.
38 kHz modulation is enabled on the pins selected by the MOD38[7:0] bits in the
Extended Port Configuration SFR (EPCFG, 0x9F).
Result
Enables MOVX instruction to use 256 bytes of extended RAM.
Disables MOVX instruction.
2
C port is selected for control of the shared I
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Table 50. Data Pointer SFR (DPTR, 0x82 and 0x83)
Bit
15 to 0
Table 51. Stack Pointer SFR (SP, 0x81)
Bit
7 to 0
Default
7
Default
0
2
2
C/SPI pins (MOSI, MISO, SCLK, and SS) and SFRs.
C/SPI pins (MOSI, MISO, SCLK, and SS) and SFRs.
Description
Contain the eight LSBs of the pointer for the
stack.
Description
Contain the 2-byte address of the data pointer.
DPTR is a combination of DPH and DPL SFRs.