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S1D13504 Hardware Functional Specification
X19A-A-002-18 Issue Date: 01/01/30
5.6 Multiple Function Pin Mapping
Note

1. All GPIO pins default to input on reset, and unless programmed otherwise should be

connected to either VSS or IO VDD if not used.

Table 5-9: Host Bus Interface Pin Mapping
S1D13504
Pin Names SH-3 MC68K Bus 1 MC68K Bus 2 Generic MPU
AB[20:1] A[20:1] A[20:1] A[20:1] A[20:1]
AB0 A0 LDS# A0 A0
DB[15:0] D[15:0] D[15:0] D[31:16] D[15:0]
WE1# WE1# UDS# DS# WE1#
M/R# External Decode External Decode External Decode External Decode
CS# CSn# External Decode External Decode External Decode
BUSCLK CKIO CLK CLK BCLK
BS# BS# AS# AS# Connect to IO VDD
RD/WR# RD/WR# R/W# R/W# RD1#
RD# RD# Connect to IO VDD SIZ1 RD0#
WE0# WE0# Connect to IO VDD SIZ0 WE0#
WAIT# WAIT# DTACK# DSACK1# WAIT#
RESET# RESET# RESET# RESET# RESET#
Table 5-10: Memory Interface Pin Mapping
S1D13504
Pin Names
FPM/EDO-DRAM
Sym 256Kx16 Asym 256Kx16 Sym 1Mx16 Asym 1Mx16
2-CAS# 2-WE# 2-CAS# 2-WE# 2-CAS# 2-WE# 2-CAS# 2-WE#
MD[15:0] DQ[15:0]
MA[8:0] A[8:0]
MA9 GPIO31A9
MA10 GPIO11A10
MA11 GPIO21A11
UCAS# UCAS# UWE# UCAS# UWE# UCAS# UWE# UCAS# UWE#
LCAS# LCAS# CAS# LCAS# CAS# LCAS# CAS# LCAS# CAS#
WE# WE# LWE# WE# LWE# WE# LWE# WE# LWE#
RAS# RAS#