AT89LP51RC2 Atmel Corporation, AT89LP51RC2 Datasheet
AT89LP51RC2
Specifications of AT89LP51RC2
Available stocks
Related parts for AT89LP51RC2
AT89LP51RC2 Summary of contents
Page 1
... Quasi-bidirectional (80C51 Style), Input-only (Tristate) • Push-pull CMOS Output, Open-drain • Operating Conditions – 2.4V to 5.5V V Voltage Range CC – -40° 85°C Temperature Range – MHz @ 2.4V–5.5V (Single-cycle) 8-bit Flash Microcontroller with 24KB/32KB Program Memory AT89LP51RB2 AT89LP51RC2 AT89LP51IC2 Summary 3722AS–MICRO–10/11 ...
Page 2
Pin Configurations 1.1 44-lead VQFP (†MOSI/CEX2/MISO) P1.5 1 (†MISO/CEX3/SCK) P1.6 2 (†SCK/CEX4/MOSI) P1.7 3 (DCL) RST 4 (RXD) P3.0 5 (SDA) P4.1 6 (TXD) P3.1 7 (INT0) P3.2 8 (INT1) P3.3 9 (T0) P3.4 10 (T1) P3.5 11 † ...
Page 3
Pin Description Table 1-1. Atmel AT89LP51RB2/RC2/IC2 Pin Description Pin Number VQFP VQFN PLCC PDIP Symbol RST P3 P4.1 7 ...
Page 4
Table 1-1. Atmel AT89LP51RB2/RC2/IC2 Pin Description Pin Number VQFP VQFN PLCC PDIP Symbol GND P2.4 ...
Page 5
Table 1-1. Atmel AT89LP51RB2/RC2/IC2 Pin Description Pin Number VQFP VQFN PLCC PDIP Symbol VDD P1.1 ...
Page 6
The AT89LP51RB2/RC2/IC2 retains all of the standard features of the AT89C51RB2/RC2, including: 64KB of In-System Programmable Flash program memory, 256 bytes of RAM, 1152 bytes of expanded RAM I/O lines, three 16-bit timer/counters, a Programmable Coun- ter ...
Page 7
Block Diagram Figure 2-1. Crystal or Resonator Crystal or Resonator 2.2 System Configuration The AT89LP51RB2/RC2/IC2 supports several system configuration options. Nonvolatile options are set through user fuses that must be programmed through the flash programming interface. Volatile options are ...
Page 8
Table 2-1. Fuse Name Clock Source A Clock Source B Oscillator Select X2 Mode Start-up Time Compatibility Mode XRAM Configuration Bootloader Jump Bit On-Chip Debug Enable In-System Programming Enable User Signature Programming Enable Default Port State Low Power Mode 2.2.2 ...
Page 9
Comparison to the Atmel AT89C51RB2/RC2/IC2 The Atmel are fully binary compatible with the 8051 instruction set. The AT89LP51RB2/RC2/IC2 has two modes of operations, Compatibility mode and Fast mode. In Compatibility mode the instruction timing, peripheral behavior, SFR addresses, bit ...
Page 10
Timer/Counters A common prescaler is available to divide the time base for Timer 0, Timer 1, Timer 2 and the WDT. The TPS defaults to 0101B, which causes the timers to count once every machine cycle. The counting rate ...
Page 11
Security The AT89LP51RB2/RC2/IC2 does not support the external access pin (EA). Therefore it is not possible to execute from external program memory in address range 0000H–1FFFH. When the third Lockbit is enabled (Lock Mode 4) external program execution is ...
Page 12
Special Function Registers A map of the on-chip memory area called the Special Function Register (SFR) space is shown in Table 3-1. Note that not all of the addresses are occupied, and unoccupied addresses may not be imple- mented ...
Page 13
Table 3-2. C51 Core SFRs Mnemonic Add Name ACC E0h Accumulator B F0h B Register PSW D0h Program Status Word SP 81h Stack Pointer SPX EFh Extended Stack Pointer DPL 82h Data Pointer Low Byte DPH 83h Data Pointer High ...
Page 14
Table 3-5. Interrupt SFRs Mnemonic Add Name IEN0 A8h Interrupt Enable Control 0 IEN1 B1h Interrupt Enable Control 1 IPH0 B7h Interrupt Priority Control High 0 IPL0 B8h Interrupt Priority Control Low 0 IPH1 B3h Interrupt Priority Control High 1 ...
Page 15
Table 3-8. Timer SFRs Mnemonic Add Name TCON 88h Timer/Counter 0 and 1 Control TMOD 89h Timer/Counter 0 and 1 Modes TCONB 91h Timer/Counter 0 and 1 Mode B TL0 8Ah Timer/Counter 0 Low Byte TH0 8Ch Timer/Counter 0 High ...
Page 16
Table 3-11. Keyboard Interface SFRs Mnemonic Add Name KBLS 9Ch Keyboard Level Selector KBE 9Dh Keyboard Input Enable KBF 9Eh Keyboard Flag Register KBMOD 9Fh Keyboard Mode Register Table 3-12. Flash Memory SFR Mnemonic Add Name BMSEL 92h Bank Mode ...
Page 17
Table 3-15. PCA SFRs (Continued) Mnemo -nic Add Name CCAPM4 DEh PCA Timer/Counter Mode 4 CCAP0H FAh PCA Compare Capture Module 0 H CCAP0H7 CCAP0H6 CCAP0H5 CCAP0H4 CCAP0H3 CCAP0H2 CCAP0H1 CCAP0H0 CCAP1H FBh PCA Compare Capture Module 1 H CCAP1H7 ...
Page 18
... AT89LP51RB2-20JUR AT89LP51RB2-20MU 44M1 (VQFN) AT89LP51RB2-20MUR AT89LP51RB2-20PU 40P6 (PDIP) AT89LP51RC2-20AAU 44AA (LQFP) AT89LP51RC2-20AAUR AT89LP51RC2-20AU 44A (TQFP) AT89LP51RC2-20AUR AT89LP51RC2-20JU 44J (PLCC) AT89LP51RC2-20JUR AT89LP51RC2-20MU 44M1 (VQFN) AT89LP51RC2-20MUR AT89LP51RC2-20PU 40P6 (PDIP) AT89LP51IC2-20AAU 44AA (LQFP) AT89LP51IC2-20AAUR AT89LP51IC2-20AU 44A (TQFP) AT89LP51IC2-20AUR AT89LP51IC2-20JU 44J (PLCC) AT89LP51IC2-20JUR AT89LP51IC2-20MU 44M1 (VQFN) AT89LP51IC2-20MUR 3722AS– ...
Page 19
... Tray AT89LP51ED2-20AU TQFP44 Reel AT89LP51ED2-20AUR Tray AT89LP51ED2-20MU VQFN44 Reel AT89LP51ED2-20MUR Tray AT89LP51ID2-20AU TQFP44 Reel AT89LP51ID2-20AUR Tray AT89LP51ID2-20MU VQFN44 Reel AT89LP51ID2-20MUR New Ordering Code AT89LP51RB2-20JU AT89LP51RB2-20JU + SL383 AT89LP51RB2-20AAU AT89LP51RB2-20AAU + SL383 AT89LP51RC2-20JU AT89LP51RC2-20JU + SL383 AT89LP51RC2-20AAU AT89LP51RC2-20AAU + SL383 AT89LP51IC2-20JU AT89LP51IC2-20JU + SL383 AT89LP51IC2-20AAU AT89LP51IC2-20AAU + SL383 19 ...
Page 20
Packaging Information 5.1 44AA – VQFP/LQFP PIN 1 PIN 1 IDENTIFIER e C 0°~8° L Notes: 1. This package conforms to JEDEC reference MS-026, Variation ACB. 2. Dimensions D1 and E1 do not include mold protrusion. Allowable protrusion is ...
Page 21
TQFP D1 e TOP VIEW C 0°~7° L SIDE VIEW Notes: 1. This package conforms to JEDEC reference MS-026, Variation ACB. 2. Dimensions D1 and E1 do not include mold protrusion. protrusion is 0.25 mm per side. ...
Page 22
PLCC 1.14(0.045) X 45˚ 0.51(0.020)MAX 45˚ MAX (3X) Notes: 1. This package conforms to JEDEC reference MS-018, Variation AC. 2. Dimensions D1 and E1 do not include mold protrusion. Allowable protrusion is .010"(0.254 mm) per ...
Page 23
VQFN/MLF D Marked Pin TOP VIEW BOTTOM VIEW Note: JEDEC Standard MO-220, Fig. 1 (SAW Singulation) VKKD-3. Package Drawing Contact: packagedrawings@atmel.com 3722AS–MICRO–10/11 AT89LP51RB2/RC2/IC2 Summary E Pin #1 Corner Pin ...
Page 24
PDIP A SEATING PLANE Notes: 1. This package conforms to JEDEC reference MS-011, Variation AC. 2. Dimensions D and E1 do not include mold Flash or Protrusion. Mold Flash or Protrusion shall not exceed ...
Page 25
Revision History Revision No. Revision A – October 2011 3722AS–MICRO–10/11 AT89LP51RB2/RC2/IC2 Summary History • Initial Release 25 ...
Page 26
... Atmel , Atmel logo and combinations thereof, and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’ ...