Hyundai GMS90X51C Flat Panel Television User Manual


 
GMS90X5XC Series HYUNDAI MicroElectronics
Jan. 2001 Ver 1.0 1
GMS90C52C/54C
GMS90L52C/54C(Low voltage versions)
Fully compatible to standard MCS-51 microcontroller
Wide operating frequency up to 40MHz
(for more detail, see “GMS90X5XC Series Selection Guide”)
X2 Speed Improvement capability (
6 clocks/machine cycle
)
20MHz @5V (Equivalent to 40MHz @5V)
8MHz @3V (Equivalent to 16MHz @3V)
•8K/16K bytes ROM
256
×
8 RAM
64K external program memory space
64K external data memory space
Four 8-bit ports
Three 16-bit Timers / Counters (Timer2 with up/down counter feature)
•USART
One clock output port
Programmable ALE pin enable / disable (Low
EMI
)
Six interrupt sources, two priority levels
Power saving Idle and power down mode
2.7Volt low voltage version available
P-DIP-40, P-LCC-44, P-MQFP-44 package
Block Diagram
RAM
256
×
8
PORT 0
PORT 1
PORT 3
PORT 2
8-BIT
USART
ROM / EPROM
GMS90X52C: 8K
×
8
CPU
T 0
T 1
I/O
I/O
I/O
I/O
T 2
GMS90X54C: 16K
×
8