Specifications

2 C33 Macro Specifications
24
EPSON
S1C33 ASIC DESIGN GUIDE
EMBEDDED ARRAY S1X50000 SERIES
2.6.6 AC Characteristics
The C33 macro block AC characteristics fall into two major sets.
One is the AC characteristics for the I/O buffer pins built into the C33 macros. These characteristics
stipulate the timing conditions for the interface with circuits outside the chip. These AC characteristics
are listed in section 2.6.6.3, "AC Characteristics Tables (I/O Buffer Pins)" and the timing charts are
shown in section 2.6.6.4, "AC Characteristics Timing Charts (I/O Buffer Pins)."
The other set is the AC characteristics for the signals that connect the C33 macro blocks to the user
circuits on the same chip. These AC characteristics are listed in section 2.6.6.5, "AC Characteristics
Tables (User Logic Interface)" and the timing charts are shown in section 2.6.6.6, "AC Characteristics
Timing Charts (User Logic Interface)."
The C33 macro bus interface can connect a wide range of external memory types, from SRAM and
ROM to EDO DRAM and burst ROM. The bus interface with chip internal user logic can only be used
as an SRAM type interface.
V'[000]h
3FF
3FE
3FD
003
002
001
000
V
SS AV DD
■ Integral linearity error
Integral linearity error E L = [LSB]
V
N ' - V N
1LSB'
Digital output (hex)
Analog input
Ideal conversion characteristic
Actual conversion characteristic
V'[3FF]h
V'[N]h
V N 'V N
V'[N-1]h
N+1
N
N-1
N-2
■ Differential linearity error
Differential linearity error E D = - 1 [LSB]
V'[N]h - V'[N-1]h
1LSB'
Digital output (hex)
Analog input
Ideal conversion characteristic
Actual conversion characteristic