C8051F365-GM Silicon Laboratories Inc, C8051F365-GM Datasheet - Page 153
![IC 8051 MCU 32K FLASH 28-QFN](/photos/12/27/122713/c8051f365-gm_sml.jpg)
C8051F365-GM
Manufacturer Part Number
C8051F365-GM
Description
IC 8051 MCU 32K FLASH 28-QFN
Manufacturer
Silicon Laboratories Inc
Series
C8051F36xr
Specifications of C8051F365-GM
Program Memory Type
FLASH
Program Memory Size
32KB (32K x 8)
Package / Case
28-QFN
Core Processor
8051
Core Size
8-Bit
Speed
100MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
POR, PWM, Temp Sensor, WDT
Number Of I /o
25
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
C8051F3x
Core
8051
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
I2C/SMBus/SPI/UART
Maximum Clock Frequency
100 MHz
Number Of Programmable I/os
25
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
KSK-SL-TOOLSTICK, PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F360DK
Minimum Operating Temperature
- 40 C
Package
28QFN
Device Core
8051
Family Name
C8051F36x
Maximum Speed
100 MHz
Operating Supply Voltage
3.3 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
770-1006 - ISP 4PORT FOR SILABS C8051F MCU336-1410 - KIT DEV FOR C8051F360 FAMILY
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1647
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
C8051F365-GM
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
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15. External Data Memory Interface and On-Chip XRAM
For C8051F36x devices, 1k Bytes of RAM are included on-chip and mapped into the external data memory
space (XRAM). Additionally, an External Memory Interface (EMIF) is available on the C8051F360/3
devices, which can be used to access off-chip data memories and memory-mapped devices connected to
the GPIO ports. The external memory space may be accessed using the external move instruction
(MOVX) and the data pointer (DPTR), or using the MOVX indirect addressing mode using R0 or R1. If the
MOVX instruction is used with an 8-bit address operand (such as @R1), then the high byte of the 16-bit
address is provided by the External Memory Interface Control Register (EMI0CN, shown in SFR Definition
15.1). Note: the MOVX instruction can also be used for writing to the FLASH memory. See Section
“13. Flash Memory” on page 135 for details. The MOVX instruction accesses XRAM by default.
15.1. Accessing XRAM
The XRAM memory space is accessed using the MOVX instruction. The MOVX instruction has two forms,
both of which use an indirect addressing method. The first method uses the Data Pointer, DPTR, a 16-bit
register which contains the effective address of the XRAM location to be read from or written to. The sec-
ond method uses R0 or R1 in combination with the EMI0CN register to generate the effective XRAM
address. Examples of both of these methods are given below.
15.1.1. 16-Bit MOVX Example
The 16-bit form of the MOVX instruction accesses the memory location pointed to by the contents of the
DPTR register. The following series of instructions reads the value of the byte at address 0x1234 into the
accumulator A:
The above example uses the 16-bit immediate MOV instruction to set the contents of DPTR. Alternately,
the DPTR can be accessed through the SFR registers DPH, which contains the upper 8-bits of DPTR, and
DPL, which contains the lower 8-bits of DPTR.
15.1.2. 8-Bit MOVX Example
The 8-bit form of the MOVX instruction uses the contents of the EMI0CN SFR to determine the upper 8-bits
of the effective address to be accessed and the contents of R0 or R1 to determine the lower 8-bits of the
effective address to be accessed. The following series of instructions read the contents of the byte at
address 0x1234 into the accumulator A.
MOV
MOVX
MOV
MOV
MOVX
DPTR, #1234h
A, @DPTR
EMI0CN, #12h
R0, #34h
a, @R0
; load DPTR with 16-bit address to read (0x1234)
; load contents of 0x1234 into accumulator A
; load high byte of address into EMI0CN
; load low byte of address into R0 (or R1)
; load contents of 0x1234 into accumulator A
C8051F360/1/2/3/4/5/6/7/8/9
Rev. 1.0
153
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