ROM Type
ROM
RAM
I/O Pins
External Memory Space
SPEED MHz
Timer/ Counter
Int
Special Function
PACKAGE
W78C32C
CMOS General purpose
W78E51B
-Multiple-Time Programmable -Extra I/O Port, / INT2, /INT3-WDT
W78E52B
-Multiple-Time Programmable-Extra I/O Port, / INT2, /INT3-WDT
W78E54
-Multiple-Time Programmable-Extra I/O Port, / INT2, /INT3
W78E58
-Multiple-Time Programmable -Extra I/O Port, / INT2, /INT3
W78E516B
-Multiple-Time Programmable -In-system Programming -Extra I/O Port, / INT2, /INT3
W78C51D
W78C52D
W78C54
-16 KB Mask ROM size-Extra I/O Port, / INT2, /INT3
W78C58
- 32 KB Mask ROM size-Extra I/O Port, / INT2, /INT3
W78C516
- 64 KB Mask ROM size - Extra I/O Port, / INT2, /INT3
W78C801
-Extra I/O Port -Wake-up the Power-Down mode -from Port1 interrupt -WDT
W78C438C
-5 pure ports I/O expanded-1 MB external memory space -Additional INT2, INT3
W78L32
W78L51
-Extra I/O Port, /INT2, /INT3, -WDT
W78L52
W78L54
-16 KB Mask ROM size -Extra I/O Port, / INT2, /INT3 ,WDT
W78L801
-Extra I/O Port-Wake-up the Power-Down mode from Port1 interrupt
-WDT
W78LE51
-Multiple-Time Programmable -Extra I/O Port, / INT2, /INT3, WDT
W78LE52
-Multiple-Time Programmable-Extra I/O Port, / INT2, /INT3, WDT
W78LE54
W78LE58
-Multiple-Time Programmable-In-system Programming -Extra I/O Port, / INT2, /INT3
W78LE516
W78LE812
-WDT-UART
W77C32
-4 clocks / machine cycle -Dual UARTs and DPTRs-Wait-state control signal-WDT -On-chip 1K Bytes MOVX SRAM -Extra I/O port
W77C58
-4 clocks / machine cycle -Dual UARTs and DPTRs -Wait-state control signal-WDT -On-chip 1K Bytes MOVX SRAM-Extra I/O port
W77E58
-4 clocks / machine cycle -Dual UARTs and DPTRs -Wait-state control signal-WDT -On-chip 1K Bytes MOVX SRAM -Extra I/O port
W77LE58
-4 clocks / machine cycle -5.5V~2.7V Supply Voltage-Dual UARTs and DPTRs -Wait-state control signal-WDT-On-chip 1K Bytes MOVX SRAM -Extra I/O port
Flash EPROM
8K
256
32/36
64 K
5.5V ~ 2.4V
3+watchdog Timer
6/8
40
44
-
16K
8
ROMless
1K+256
32
5.5V ~ 2.7V
3
6
-4 clocks / machine cycle
-Dual UARTs and DPTRs -Wait-state control signal-WDT -On-chip 1K Bytes MOVX SRAM -Extra I/O port
32K
13
-4 clocks / machine cycle-5.5V~2.7V Supply Voltage-Dual UARTs and DPTRs -Wait-state control signal -WDT -On-chip 1K Bytes MOVX SRAM -Extra I/O port