C8051F321R Silicon Laboratories Inc, C8051F321R Datasheet - Page 115

• Manufacturer Part Number: C8051F321R
• Description: IC 8051 MCU 16K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F32xr

Specifications of C8051F321R

• 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
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: 336-1067-2

Bits7-3:
Bits2-0:
R/W
Bit7
-
Not Used - reads 00000b.
PGSEL[2:0]: XRAM Page Select Bits.
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 12.3. EMI0CN: External Memory Interface Control
R/W
Bit5
-
R/W
Bit4
-
R/W
Bit3
-
Rev. 1.1
PGSEL2
R/W
Bit2
PGSEL1
R/W
Bit1
C8051F320/1
PGSEL0
R/W
Bit0
SFR Address:
00000000
Reset Value
0xAA
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