C8051F012-GQ Silicon Laboratories Inc, C8051F012-GQ Datasheet - Page 69
![IC 8051 MCU 32K FLASH 32LQFP](/photos/12/38/123868/c8051f012-gq_sml.jpg)
C8051F012-GQ
Manufacturer Part Number
C8051F012-GQ
Description
IC 8051 MCU 32K FLASH 32LQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F01xr
Specifications of C8051F012-GQ
Program Memory Type
FLASH
Program Memory Size
32KB (32K x 8)
Package / Case
32-LQFP
Core Processor
8051
Core Size
8-Bit
Speed
20MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 4x10b; D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
C8051F0x
Core
8051
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
I2C, SMBus, SPI, UART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
8
Number Of Timers
4 bit
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
C8051F005DK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 4 Channel
On-chip Dac
12 bit, 2 Channel
Data Rom Size
32 KB
A/d Bit Size
10 bit
A/d Channels Available
4
Height
1.4 mm
Length
7 mm
Supply Voltage (max)
3.6 V
Supply Voltage (min)
2.7 V
Width
7 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1193
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F012-GQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Company:
Part Number:
C8051F012-GQR
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
10.2.5. Stack
A programmer’s stack can be located anywhere in the 256-byte data memory. The stack area is designated using
the Stack Pointer (SP, 0x81) SFR. The SP will point to the last location used. The next value pushed on the stack is
placed at SP+1 and then SP is incremented. A reset initializes the stack pointer to location 0x07. Therefore, the
first value pushed on the stack is placed at location 0x08, which is also the first register (R0) of register bank 1.
Thus, if more than one register bank is to be used, the SP should be initialized to a location in the data memory not
being used for data storage. The stack depth can extend up to 256 bytes.
The MCUs also have built-in hardware for a stack record. The stack record is a 32-bit shift register, where each
Push or increment SP pushes one record bit onto the register, and each Call or interrupt pushes two record bits onto
the register. (A Pop or decrement SP pops one record bit, and a Return pops two record bits, also.) The stack
record circuitry can also detect an overflow or underflow on the Stack, and can notify the debug software even with
the MCU running full-speed debug.
69
C8051F000/1/2/5/6/7
C8051F010/1/2/5/6/7
0x7DFF
0x7FFF
0x7E00
0x807F
0x8000
0x0000
PROGRAM MEMORY
Programmable in 512
128 Byte ISP FLASH
Byte Sectors)
RESERVED
(In-System
FLASH
Figure 10.2. Memory Map
0xFFFF
0x0FFF
0x17FF
0x07FF
0xF800
0x1000
0x0800
0x0000
0xFF
0x7F
0x2F
0x1F
0x80
0x30
0x20
0x00
(same 2048 byte RAM block )
(same 2048 byte RAM block )
(same 2048 byte RAM block )
Rev. 1.7
RAM - 2048 Bytes
(accessable using MOVX
(Indirect Addressing
(Direct and Indirect
EXTERNAL DATA ADDRESS SPACE
General Purpose
INTERNAL DATA ADDRESS SPACE
Upper 128 RAM
Bit Addressable
Addressing)
Registers
command)
Only)
DATA MEMORY
(Direct Addressing Only)
Special Function
Lower 128 RAM
(Direct and Indirect
Addressing)
Register's
The same 2048 byte RAM
block can be addressed on
2k boundaries throughout
the 64k External Data
Memory space.