C8051F313-GM Silicon Laboratories Inc, C8051F313-GM Datasheet - Page 119
C8051F313-GM
Manufacturer Part Number
C8051F313-GM
Description
IC 8051 MCU 8K FLASH 28MLP
Manufacturer
Silicon Laboratories Inc
Series
C8051F31xr
Specifications of C8051F313-GM
Core Size
8-Bit
Program Memory Size
8KB (8K x 8)
Oscillator Type
Internal
Core Processor
8051
Speed
25MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
POR, PWM, Temp Sensor, WDT
Number Of I /o
25
Program Memory Type
FLASH
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 17x10b
Operating Temperature
-40°C ~ 85°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
No. Of I/o's
25
Ram Memory Size
1280Byte
Cpu Speed
25MHz
No. Of Timers
4
No. Of Pwm Channels
5
Digital Ic Case
RoHS Compliant
Rohs Compliant
Yes
Processor Series
C8051F3x
Core
8051
Data Bus Width
8 bit
Data Ram Size
1.25 KB
Interface Type
I2C, SMBus, SPI, UART
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
25
Number Of Timers
5
Operating Supply Voltage
2.7 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F310DK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit
Data Rom Size
128 B
Height
0.88 mm
Length
5 mm
Supply Voltage (max)
3.6 V
Supply Voltage (min)
2.7 V
Width
5 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
770-1006 - ISP 4PORT FOR SILABS C8051F MCU
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Other names
336-1256
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11. External RAM
The C8051F31x devices include 1024 bytes of RAM mapped into the external data memory space. All of
these address locations may be accessed using the external move instruction (MOVX) and the data
pointer (DPTR), or using MOVX indirect addressing mode. 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 Mem-
ory Interface Control Register (EMI0CN as shown in SFR Definition 11.1). Note: the MOVX instruction is
also used for writes to the Flash memory. See
MOVX instruction accesses XRAM by default.
For a 16-bit MOVX operation (@DPTR), the upper 6-bits of the 16-bit external data memory address word
are "don't cares.” As a result, the 1024 byte RAM is mapped modulo style over the entire 64 k external
data memory address range. For example, the XRAM byte at address 0x0000 is shadowed at addresses
0x0400, 0x0800, 0x0C00, 0x1000, etc. This is a useful feature when performing a linear memory fill, as the
address pointer doesn't have to be reset when reaching the RAM block boundary.
Bits 7–2: UNUSED. Read = 000000b. Write = don’t care.
Bits 1–0: PGSEL: XRAM Page Select.
R/W
Bit7
SFR Definition 11.1. EMI0CN: External Memory Interface Control
The EMI0CN register provides the high byte of the 16-bit external data memory address
when using an 8-bit MOVX command, effectively selecting a 256-byte page of RAM. Since
the upper (unused) bits of the register are always zero, the PGSEL determines which page
of XRAM is accessed.
For Example: If EMI0CN = 0x01, addresses 0x0100 through 0x01FF will be accessed.
R/W
Bit6
R/W
Bit5
R/W
Bit4
Section “10. Flash Memory” on page 111
Rev. 1.7
R/W
Bit3
C8051F310/1/2/3/4/5/6/7
R/W
Bit2
R/W
Bit1
PGSEL
SFR Address:
R/W
Bit0
for details. The
0xAA
00000000
Reset Value
119
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