Rainbow Electronics AT83C5127 User Manual
Features
• Clock Controller
– 80C51 core with 6 clocks per instruction
– 8 MHz On-Chip Oscillator
– PLL for generating 96 MHz clock to supply CPU core, USB and Smart Card Interfaces
– Programmable CPU clock from 500 kHz / X1 to 48 MHz / X1
• Reset Controller
– Power On Reset (POR) feature avoiding an external reset capacitor
– Power Fail Detector (PFD)
– Watch-Dog Timer
• Power Management
– Two power saving modes: Idle and Power Down
– Four Power Down Wake-up Sources: Smart Card Detection, Keyboard Interrupt, USB
Resume, External Interrupt
– Input Voltage Range: 4.5V - 5.5V
– Core’s Power Consumption (Without Smart Card and USB):
•30 mA Maximum Operating Current @ 48 MHz / X1
•200 µA Maximum Power-down Current @ 5.5V
• Interrupt Controller
– up to 7 interrupt sources
– up to 4 Level Priority
• Memory Controller
– Internal Program memory: up to 16 Kbytes of ROM
– Internal Data Memory : 768 bytes including 256 bytes of data and 512 bytes of XRAM
• Two 16-bit Timer/Counters
• USB 2.0 Full Speed Interface
– 48 MHz DPLL
– On-Chip 3.3V USB voltage regulator and transceivers
– Software detach feature
– 7 endpoints programmable with In or out directions and ISO, Bulk or Interrupt Transfers :
•Endpoint 0: 32 Bytes Bidirectionnal FIFO for Control transfers
•Endpoints 1,2,3: 8 bytes FIFO
•Endpoints 4,5: 64 Bytes FIFO
•Endpoint 6: 2*64 bytes FIFO with Pin-Pong feature
• ISO 7816 UART Interface Fully Compliant with EMV2000, GIE-CB and WHQL Standards
– Programmable ISO clock from 1 MHz to 4.8 MHz
– Card insertion/removal detection with automatic deactivation sequence
– Programmable Baud Rate Generator from 372 to 11.625 clock pulses
– Synchronous/Asynchronous Protocols T=0 and T=1 with Direct or Inverse Convention
– Automatic character repetition on parity errors
– 32 Bit Waiting Time Counter
– 16 Bit Guard Time Counter
– Internal Step Up/Down Converter with Programmable Voltage Output:
•1.8V-30mA, 3V-50mA and 5V-60mA
– Current overload protection
– 6 kV ESD (MIL/STD 833 Class 3) protection on whole Smart Card Interface
• Alternate Smart Card Interface with CLK, IO and RST
• UART Interface with Integrated Baud Rate Generator (BRG)
• Four 12 I/O bit Ports
– Up to four LED outputs with 3 level programmable current source: 2, 4 and 10 mA
– Two General Purpose I/O programmable as external interrupts
• Packages
– VQFP32, QFN32, Die
C51
Microcontroller
with USB and
Smart Card
Reader
Interfaces
AT83C5127
Summary
For detailed functional description,
please refer to the AT8xC5122/23
datasheet.
7519A–SCR–04/05
1
Product description AT83C5127 product is high-performance CMOS derivatives of the 80C51 8-bit micro-
controllers designed for USB smart card reader applications.
The AT83C5127 is a low pin count of the AT8xC5122 and is proposed in ROM version.
The ROM device is only factory programmable.
Block Diagram
VCC
VSS
XTA L 1
XTA L 2
RST
8 MHz
Osci llat or
PLLPLLF
WATCH-DOG
POR
PFD
RESET
3. 3 V
Regulat or
256 x 8
RAM
80C51 8-BIT CORE
256 x 8
RAM
16K x 8
ROM
512 x 8
XR A M
TxD
RxD
UART
Interface
INTERNAL ADD RESS AND DATA BUS
3-BI T
PORT
16-BI T
TI MER S
P1[2,6-7]
T[0-1]
Par all el I/O Port s
8-BI T
PORT
P3[0-7]
I nterr upt
Cont roll er
1-BI T
PORT
LI
CVCC
DC/DC
Conv ert er
USB
Interface
D+
D-
CVSS
VREF
Interface
ISO 7816
3.3V
Regulat or
AVSS
AVCC
CPRES
CRST
CCLK
CIO
CC4
CC8
DVCC
IN T[ 0-1]
P5.0
LED's
CRST1
CCLK1
Alt ernat e
Card
LED[0-3]
CIO1
2
AT83C5127
7519A–SCR–04/05
Package Description
AT83C5127
Figure 1. VQFP32 Package Pinout
CIO
DVCC
P1.2/CPRES
CC8
CRST
CC4
CCLK
P5.0
VSS
1
2
3
4
5
6
7
8
CVCC
Figure 2. MLF32 Package Pinout
CIO
DVCC
P1.2/CPRES
CC8
CRST
CC4
CCLK
P5.0
VSS
1
2
3
4
5
6
7
8
CVCC
D-D+AVC C
P1.7/CCLK1
VREF
PLLF
28 27 26
VQFP32
1211109131415
LI
VCC
P1.7/CCLK1
CVSS
VREF
P3.7/LED3
D-D+AVC C
XTAL1
XTAL2
PLLF
28 27 26
MLF32
1211109131415
LI
VCC
CVSS
XTAL1
XTAL2
P3.7/LED3
AVS S
2529303132
P3.1/TxD
24
P1.6
23
P3.0/RxD
22
P3.5/T1/CRST1
21
P3.2/INT0/LED0/CIO1
20
P3.3/INT1
19
P3.4/T0/LED1
18
P3.6/LED2
17
16
RST
AVS S
2529303132
P3.1/TxD
24
P1.6
23
P3.0/RxD
22
P3.5/T1/CRST1
21
P3.2/INT0/LED0/CIO1
20
P3.3/INT1
19
P3.4/T0/LED1
18
P3.6/LED2
17
16
RST
7519A–SCR–04/05
3
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