Rainbow Electronics AT83C26 - Manual (Page 2)

2
7511B–SCR–10/05
AT83C26
Acronyms
TWI: Two Wire Interface
POR: Power On Reset
PFD: Power Fail Detect
ART: Automatic Reset Transition
ATR: Answer To Reset
Block Diagram
Note: 1. CRST3/CC82 are on the same pin. CIO3/CC42 are on the same pin. If complete Smart card 2
interface is used, SAM/SIM3 isn’t available. Respectively, if SAM/SIM3 is used, complete
Smart card 2 isn’t available.
INT
CRST1
CPRES1
CVCC1
LIA
RESET
Voltage
supervisor
POR/PFD
TWI
Controller
DC/DC
Converter A
Analog
Drivers
SCL
SDA
Main
Control
& Logic Unit
CVSS1
Clock Circuit CCLK
CCLK1
Clock Controller
Timer
16 bits
A2/CK, A1/RST
CLK
CVCCIN1
CIO1
CC41
CC81
CRST2
CPRES2
CCLK2
CIO2
smart
card 1
smart
card 2
CRST3, see (1)
CCLK3
CIO3, see (1)
CRST4
CCLK4
CIO4
CRST5
CCLK5
CIO5
SAM/SIM 1
SAM/SIM 2
SAM/SIM 3
I/0
Selection
I/O1
I/O2
AUX1
AUX2
CVCC3
DC/DC
Converter B
CVCC5
CVCC4
LDO
LDO
LDO
CVCC2
LDO
LIB CVSSB CVCCB VCC VSS
CC82, see (1)
CC42, see (1)
CVCCINB
SC1
SC2
SC3
SC4
SC5
EVCC
BYPASS