Rev. 1.4 7

C8051F320/1

20.3.2.Watchdog Timer Usage ......................................................................... 238

20.4.Register Descriptions for PCA........................................................................ 239

21.C2 Interface........................................................................................................... 245

21.1.C2 Interface Registers.................................................................................... 245

21.2.C2 Pin Sharing ............................................................................................... 247

C8051F320/1

8 Rev. 1.4

List of Figures and Tables

1. System Overview

Table 1.1. Product Selection Guide ........................................................................ 16

Figure 1.1. C8051F320 Block Diagram.................................................................... 16

Figure 1.2. C8051F321 Block Diagram.................................................................... 17

Figure 1.3. On-Chip Clock and Reset ...................................................................... 19

Figure 1.4. On-Board Memory Map.......................................................................... 20

Figure 1.5. USB Controller Block Diagram............................................................... 21

Figure 1.6. Development/In-System Debug Diagram............................................... 22

Figure 1.7. Digital Crossbar Diagram....................................................................... 23

Figure 1.8. PCA Block Diagram ............................................................................... 24

Figure 1.9. PCA Block Diagram ............................................................................... 24

Figure 1.10. 10-Bit ADC Block Diagram................................................................... 25

Figure 1.11. Comparator0 Block Diagram................................................................ 26

2. Absolute Maximum Ratings

Table 2.1. Absolute Maximum Ratings .................................................................... 27

3. Global Electrical Characteristics

Table 3.1. Global Electrical Characteristics ............................................................. 28

Table 3.2. Index to Electrical Characteristics Tables .............................................. 29

4. Pinout and Package Definitions

Table 4.1. Pin Definitions for the C8051F320/1 ...................................................... 30

Figure 4.1. LQFP-32 Pinout Diagram (Top View) .................................................... 32

Figure 4.2. QFN-28 Pinout Diagram (Top View) ...................................................... 36

5. 10-Bit ADC (ADC0)

Figure 5.1. ADC0 Functional Block Diagram............................................................ 39

Figure 5.2. Temperature Sensor Transfer Function................................................. 41

Figure 5.3. Temperature Sensor Error with 1-Point Calibration (VREF = 2.40 V).... 42

Figure 5.4. 10-Bit ADC Track and Conversion Example Timing .............................. 44

Figure 5.5. ADC0 Equivalent Input Circuits.............................................................. 45

Figure 5.6. ADC Window Compare Example: Right-Justified Single-Ended Data... 52

Figure 5.7. ADC Window Compare Example: Left-Justified Single-Ended Data ..... 52

Figure 5.8. ADC Window Compare Example: Right-Justified Differential Data ....... 53

Figure 5.9. ADC Window Compare Example: Left-Justified Differential Data.......... 53

Table 5.1. ADC0 Electrical Characteristics ............................................................. 54

6. Voltage Reference

Figure 6.1. Voltage Reference Functional Block Diagram ....................................... 55

Table 6.1. Voltage Reference Electrical Characteristics ......................................... 56

7. Comparators

Figure 7.1. Comparator0 Functional Block Diagram ................................................ 57

Figure 7.2. Comparator1 Functional Block Diagram ................................................ 58

Figure 7.3. Comparator Hysteresis Plot ................................................................... 59

Table 7.1. Comparator Electrical Characteristics .................................................... 66

8. Voltage Regulator (REG0)

Rev. 1.4 9

C8051F320/1

Figure 8.1. External Capacitors for Voltage Regulator Input/Output........................ 67

Table 8.1. Voltage Regulator Electrical Specifications ............................................ 68

Figure 8.2. REG0 Configuration: USB Bus-Powered............................................... 68

Figure 8.3. REG0 Configuration: USB Self-Powered............................................... 69

Figure 8.4. REG0 Configuration: USB Self-Powered, Regulator Disabled .............. 69

Figure 8.5. REG0 Configuration: No USB Connection............................................. 70

9. CIP-51 Microcontroller

Figure 9.1. CIP-51 Block Diagram............................................................................ 71

Table 9.1. CIP-51 Instruction Set Summary............................................................ 73

Figure 9.2. Memory Map .......................................................................................... 77

Table 9.2. Special Function Register (SFR) Memory Map...................................... 79

Table 9.3. Special Function Registers .................................................................... 80

Table 9.4. Interrupt Summary ................................................................................. 89

10.Reset Sources

Figure 10.1. Reset Sources...................................................................................... 99

Figure 10.2. Power-On and VDD Monitor Reset Timing ........................................ 100

Table 10.1. Reset Electrical Characteristics .......................................................... 105

11.Flash Memory

Table 11.1. Flash Electrical Characteristics .......................................................... 107

Figure 11.1. Flash Program Memory Map and Security Byte................................. 108

Table 11.2. Flash Security Summary ..................................................................... 109

12.External RAM

Figure 12.1. External Ram Memory Map................................................................ 114

Figure 12.2. XRAM Memory Map Expanded View................................................. 115

13.Oscillators

Figure 13.1. Oscillator Diagram.............................................................................. 116

Table 13.1. Typical USB Full Speed Clock Settings............................................... 123

Table 13.2. Typical USB Low Speed Clock Settings.............................................. 124

Table 13.3. Internal Oscillator Electrical Characteristics ....................................... 125

14.Port Input/Output

Figure 14.1. Port I/O Functional Block Diagram..................................................... 126

Figure 14.2. Port I/O Cell Block Diagram ............................................................... 127

Figure 14.3. Crossbar Priority Decoder with No Pins Skipped............................... 128

Figure 14.4. Crossbar Priority Decoder with Crystal Pins Skipped ........................ 129

Table 14.1. Port I/O DC Electrical Characteristics ................................................ 138

15.Universal Serial Bus Controller (USB)

Figure 15.1. USB0 Block Diagram.......................................................................... 139

Table 15.1. Endpoint Addressing Scheme............................................................. 140

Figure 15.2. USB0 Register Access Scheme......................................................... 142

Table 15.2. USB0 Controller Registers .................................................................. 144

Figure 15.3. USB FIFO Allocation .......................................................................... 147

Table 15.3. FIFO Configurations ............................................................................ 148

Table 15.4. USB Transceiver Electrical Characteristics ........................................ 168

16.SMBus

Figure 16.1. SMBus Block Diagram ....................................................................... 169

Part #	C8051F321-GMR
Description	16KB,10ADC,USB,28PIN MCU (LEAD FREE) MLP28 -40 TO 85 DEG.
Category	IC
Availability	In Stock
Qty	560

Qty	Price
1 - 24	$10.41286
25 - 60	$8.28296
61 - 128	$7.80964
129 - 275	$7.25745
276 +	$6.46859

C8051F321-GMR

Related Items

Technical Document