C8051F321-GMR Silicon Laboratories Inc, C8051F321-GMR Datasheet - Page 115

• Manufacturer Part Number: C8051F321-GMR
• Description: IC 8051 MCU 16K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F32xr

Specifications of C8051F321-GMR

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 21
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Processor Series: C8051F3x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 2.25 KB
• Interface Type: I2C, SMBus, SPI, UART, USB
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 21
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F320DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 13 Channel / 10 bit, 7 Channel
• Package: 28MLP
• Device Core: 8051
• Family Name: C8051F321
• Maximum Speed: 25 MHz
• Operating Supply Voltage: 3.3 V
• For Use With: 336-1480 - DAUGHTER CARD TOOLSTCK C8051F321336-1449 - ADAPTER PROGRAM TOOLSTICK F321336-1260 - DEV KIT FOR C8051F320/F321
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Bits7–3: Unused: Read = 00000b. Write = don’t care.
Bits2–0: PGSEL[2:0]: XRAM Page Select Bits.
User XRAM Space
(System Clock Domain)
R/W
Bit7
-
SFR Definition 12.1.
The XRAM Page Select Bits provide 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. The upper 5-bits are "don't cares", so the 2k address blocks are repeated modulo over
the entire 64k external data memory address space.
R/W
Bit6
-
Figure 12.2. XRAM Memory Map Expanded View
0x03FF
0x0000
R/W
Bit5
-
(1024 bytes)
User XRAM
EMI0CN: External Memory Interface Control
R/W
Bit4
-
Rev. 1.4
R/W
Bit3
-
0x07FF
0x07C0
0x07BF
0x0740
0x073F
0x0640
0x063F
0x0440
0x043F
0x0400
PGSEL2
R/W
Bit2
(128 bytes)
(256 bytes)
(512 bytes)
Endpoint0
Endpoint1
Endpoint2
Endpoint3
(64 bytes)
(64 bytes)
Free
PGSEL1
R/W
Bit1
C8051F320/1
PGSEL0
USB FIFO Space
R/W
Bit0
(USB Clock Domain)
SFR Address:
00000000
Reset Value
0xAA
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